Recently I printed a few really cool silica gel containers, which screw into the centers of spools.  The design is by KYZ Design over on MakerWorld.  The holders are AMS compatible and is really well thought out to work well and print efficiently.  There is an update not included in the base 3MF however, which I recommend using - its for the small lids which cover the compartments.  Those updated lids can be found in the 3MF named "Test Fit Cap Trial - Read Profile Description" and are worth printing.  

Regarding the silica gel itself, if you have shopped for the stuff, you will soon find there are several options.  Some are just plain clear/white and others have indicator colors added.  The indicators look cool and serve a function, however there are some downsides.  The blue indicators use cobalt chloride and are not food safe, but I've read it's a bit cheaper.  I'm no chemist, but I would not use the blue silica gel beads due to the cobalt chloride colorant.  The other choice for an indicator is orange (​Methyl violet) which is also not food safe (for direct contact at least), but should be safer than the blue stuff.  I think the best balance for use with my filament spools is the mixed orange and clear silica gels, since they contain only 5-10% orange indicator beads and the rest is just the clear stuff with no additives.  If I had pets that got into stuff I'd go with the clear beads and skip the indicators, since using a humidity sensor can tell me when it's time to change or recharge it.  I picked up some of this mixed orange and clear silica gel, which was a buck cheaper than Amazon, and includes free shipping.  I wish they sold smaller sizes since I don't know if I will be able to use up a gallon of the stuff, but it's still cheaper to buy that size than try to get enough in smaller quantities.  Having a gallon of the stuff also allows me to add more gel to my storage containers... but I will need to print more of the silica gel containers.  

Update 3/10/2024:  I remixed a cap with an integrated handle for KYZ's FF2 Desiccant Spool Holders.  This cap remix just removes the need for a tool to tighten the caps, and still sits flush with the top of the holders (well, really about 1mm proud of the surface).  The design does go in further than the original cap, so a small volume of beads will be sacrificed, but I'm fine with that tradeoff for a tool free cap.  You can find the remixed cap here.

Update 3/31/2024 - There is a newer Version 2.0 of these bins now available.  You can find them here:
https://makerworld.com/en/models/403263#profileId-304908​
https://www.printables.com/model/824499-gridfinity-1xy-multi-compartment-lidded-bins-with​
And now, back to the regularly scheduled programming:

There is a new lidded bin for Gridfinity, it's a small and simple 1x1x6U bin.  This 1x1x6U model is the first to get a filament hinge option though, which I plan to add to the others as well.  There is also an alternative tab design available (on the 1x1x6U only) which flips the tab around 180º, which I am seeking feedback on.  If it's preferred then I may add that to the other designs as well.

Currently the following lidded bins are available:

1. 6 compartment 4x1 (6U) bin with lids
2. 3 compartment 2x1 (6U) bin with lids
3. 1 compartment 2x1 (6U) bin with a magnet pickup tool
4. 1 compartment 1x1 (6U) bin with lid (versions with a filament hinge pin and rotated tab available with this model only)​

Update 3/27/2024: I've gotten some really great feedback from Ch3vr0n @ Printables on the current design, and made some updates to the design.  I am gonna test these, but the changes include:

• 25% larger tabs
• Wider (110°) opening tabs

They will still be able to use the 9mm or 12mm P-Touch labels and are otherwise very similar to the current design.  I may also try a design with the tabs rotated 180° and see which work best.  In the pics below, the new design is in light blue, and the current design is in the darker blue.

Update 3/29/2024: There have been a few more iterations of the tab design since the post on 3/27.  I think though, the design shown below will be the final version.  The tab opens to 80° which seems like plenty, and more importantly, it is a bit thicker and has a more robust hinge.  I went ahead and added it to the rest of the bins, and also re-worked the 1x4 6 compartment bin so the doors would be the same size.

For the sake of simplicity, I plan to upload these as one post, and will add links to the new version from the old versions.  That should happen soon.

I was told that one of my models (which is itself a remix) is for sale on Amazon yesterday.  For designers of popular models, this is nothing new.  But I'm not a designer of popular models, so this is the first time I've seen it happen with something I designed (or in this case remixed).  On the one hand I'm flattered that somebody would feel that using it without permission was worthwhile.  But on the other hand, I think they should respect that I post the designs so folks can make them on their own printers, not to sell (they are non-commercial).  I asked the Amazon seller to remove my model from their listing, and I hope they will respect that.

Update - the seller responded and offered to pay a copyright fee or would otherwise remove it in a month.  Since this model is a remix, I would not take any fee for it, and asked that they remove the weapons pack from their product.  They seemed cool though, and I think they are going to follow through, and do the right thing.  I should also mention that I have no reason to believe the seller is not properly allowed to use the Dummy 13 figure model, since I believe that Soozafone's supporters at a certain tier have that ability to sell his creations.  I was only concerned about the Weapons Pack model (which is under a non-commercial license), and I think that issue is now going to be resolved.

Update 2 - There are still a ridiculous number of Amazon sellers who are selling designs from myself and other designers without permission.  I released my designs under a non-commercial license, and there are no "authorized sellers", but that doesn't stop some folks I guess.  

There is a new 3 compartment 2x1 (6U high) Gridfinity bin posted, which is designed for the Box For Stuff v2.0 design.  It uses a large paperclip as the hinge, and has a multicolor printing option.

You can find it here:
www.printables.com/model/747515-gridfinity-bin-1x2-divided-into-3-compartments-wit

I also made a little 2x1 (6U) bin with a magnet pickup tool.  It uses a 6x25 cylinder magnet which works well to help extract tiny stainless steel screws from these bins.  The bin is also large enough to hold a few Allen wrenches.

You can find it here:
www.printables.com/model/757324-gridfinity-bin-1x2-with-small-parts-magent-tool