Simple Dispenser, 5 slots of 25mm abrasive Velcro disks used for a Dremel or other rotary tool.
In addition, there are various holes that take other tools - because tools! moar tools!
Printed in 0.3 layer height / draft mode on a Prusa i3.
You might want to add a few percent in scale so the disks fit in, depending on how accurate your 3d printer is. I like the resistance/interference as i don't want them to fall out while i move the tray around.
For other things i make/do/create:
YT Playlists for Model/Machining hobbies:
Hope it's useful!