I made the smaller one a while back to fit in my workshop to hold various drill driver bits, center punches, etc. It has a middle piece that acts as an upright holder for the bits so they don’t slump over in the holes.
A few weeks ago I was frustrated at the need for more space and for bigger holes - I wanted the biggest ones for a few items that just didn’t fit, so I extended and added.
The smaller one is just a hair bigger than 7" and the larger one is 12". This is made for 1/8" draftboard - I used proofgrade at first, but now I use the dark brown hard board from Home Depot and it works great. Pressure fit will hold it together for glue up - what I did / do is put the bottom and 3 sides on, spray some accelerator on the 3 pieces inside, then literally drag glue around the seam inside. The accelerator hardens the glue in about 10 seconds, and then I put the middle insert in, add the other side and do the same thing with accelerator and glue.
Put the top on - spray accelerator on the finger joints and then drizzle glue across the finger joints.
Spray accelerator on the back, put some dabs of glue on the hooks, and glue them in place. Took me all of 5 minutes to construct and it’s rock solid. A little light sanding on the dried glue and you have a respectable bit holder for the garage. Here’s a quick pic of the larger one - disregard the dried glue running up the face - I used a hair too much!
FYI - the clips on the back go up - so the three holes would be mated with the top piece so when you glue the clips in, they’ll be the correct way. And they’re a tight fit on newer pegboard, which seems to have bigger holes that older pegboard.
Interesting to add a tall “cup” holder to an end. Any idea how tall? I could design a separate one for ZIP ties, I rather like that idea. Right now I have a big container of all sizes and they’re mixed.