I made this:
to be able to add up to 1 kg silcat gel into the AMS to reduce the humidity.
What do you think about it and the idea to print a spool for each filament used to have the spool themself as a filament swatch?
It’s an intriguing idea and I love they way you merchandised your design with the color variety… looks very “Deutschland”. 
However, have you done any scientific testing to determine if more is better or if more is just more? By that I mean, it would seem that at some point, one loses out to the law of diminishing returns. So if lets say one has a pile of desiccant that is 10x10x10cm in dimensions. Wouldn’t it stand to reason that the desiccant in the interior of the mass would be suffocated from exchanging moisture leaving only surface desiccant to do its job? Or does your design tumble the spool as it unwinds? That would be really cool as it would ensure even distribution.
This is a good question. The better the gel is spread out the easier it can absorb moisture. So having 4 containers is better than having one with the same amount. The rotating of the spools is also useful for better distribution. Too much is not possibly in this case. The kind of gel i use, is the orange one that get dark green if wet. This gel can be dried without loosing his functionality. It’s very cheap and available in most countries via amazon. It needs a high temperature of 110°C to give away the water so the situation that water drips into the AMS as we know from the tiny silcat bags will never happen.
The colors are randomly taken, i think the coolest idea is to use the same filament as used on the spool so the spool is the swatch.