One of my earlier designs for learning FreeCAD, these days I'm into F360.
I use this for keeping pointy/sharp tools standing upright. No frills, nothing fancy.
Recently I find myself using these mostly for easy access to the free allen/hex keys I get with the printers I bought. Easy to store, pick and take.
Larger version can keep all the allen keys given with most 3D printers.
Update: Revisited this design with Fusion 360 and made it a solid so you can print it in vase mode and save material & time. It takes 5g of PETG with eSUN in Vase mode at 0.24mm draft mode. Vase mode => single perimeted, 0% infill.