I know this is incredibly niche but if you need it, you kinda really need it. xD
Anyway, as part of my ongoing air-exchange-based HVAC project, I have an outdoor air quality sensor from Ambient Weather (no sponsorship, I bought with my own money, etc). It's battery/solar powered, and that's fine... except for the part where that doesn't work here in the winter. We just don't get enough sun or close to it.
But it plugs in to charge and keeps working when plugged in, so winner winner chicken dinner, right?
WRONG! Because to do that you have to take the bottom off the case, and then, the charge plug sticks directly out from the bottom facing down, like a goddamn Apple Magic Mouse.
So maybe I can't fix the mouse, but I can fix this, and so I have made a printable tray and rack system that lets you use it that way without it being stupid. Enjoy!
https://cdn.thingiverse.com/assets/8c/fc/44/4e/16/fceb8b64-655b-4677-9233-0eb649cab5a9.jpg
I've printed a couple of spools at different sizes, it's really kind of nice to have them. Particularly smaller spools for smaller sample lengths, super worth it.
But another thing you can do is just print a little single-wall cylinder that friction fits inside one of your existing spools, then cut the existing (non-printed) spool in half down the middle and use the cylinder as a friction-fit sleeve to hold the two halves together. That also gives you the same functionality. It's not as cool but it saves on filament? ^_^