Spanner holder, inspired by (among others) https://www.thingiverse.com/thing:4244179

Designed to fit my mishmash of random spanners, and to fit the pegboard that I have which has a 25mm hole spacing. I've used a zip tie to attach the spanner holder to the pegboard.

The biggest spanner has a 35.5mm diameter head, and the smallest one has a 17mm diameter head. Spanner thicknesses are 7mm for the biggest spanner, and 5mm for the smallest.