Customizable Spool Drawer

As soon as I saw hirez99's "Spool drawer", I thought of several uses for it. But I don't even know what size his Tesla spools are, and *my* spools are all different sizes. So obviously a customizable one would be really helpful.

I figure other people will think the same way. This is probably usable now...

I want to save others the legwork I've already done. So I've broken my personal rule by posting something that I haven't even printed yet! I think it will work, but there's still a bit of tidying up to do. The attached STL is just an example of what can be produced.

Still to do:
1. Test out stacked drawers and make sure they work.
2. A latch to make it stay closed... currently thinking about a small magnet
3. A stacker thing to stack multiple spools on top of each other

I welcome any improvements to this design... I'd love this to be a collaborative project. You can email your changes to me (email address is in the file), or message me on TV, or comment on this Thing,