I did this for reading glasses.

Now I find them all hanging out in a novel hiding place, how do them manage this grouping behaviour?

I've done this with a lot of tools

hex keys, scissors, utility knives, and screwdrivers can be found on every level of my house and in the garage, as well as in dedicated tool sets (i.e. bicycle toolbox)

no more "oh I need to go get this tool to fix this one minor thing. that's annoying me every time I use it", it's at most ten steps away and I can do it now