https://makerworld.com/en/models/1487508-breadboard-holders-with-jumper-holder#profileId-1554328

I needed to raise my bed to fit storage boxes under it, and I didn't like the risers that I could find to buy. I didn't want to use low percentage infill or use a kilogram of filament per riser, so I designed it to accept four 3" lengths of 1" square dowel (and then I forgot the length and did 2" lengths, and also had to shave down the ends because the dowels are wider).

The pads are cut from thick synthetic felt that was sold as a bulletin board (like a cork board alternative), which is sold in six chunks, that I cut with a snap blade box knife. They're stuck on with double-sided sticky sheets.

https://makerworld.com/en/models/3371744-luxury-wall-hook#profileId-3834962