Well, somebody should say it: That is about the coolist way to mount pedals to a board I have ever seen!
Cheap- hell, free- you can pick up used, worn-out bike chains free from ANY bike shop. chances are they have two or three on any day you happen do drop by.
Great looking- if I didn't know that was a chain link, I might not have ID'd it- and I have worked as a bike tech, and ridden for years. If I don't recongnize it, no one else will, either.
Ecologically sound- Reduce, Reuse, Recycle, in that order- as you did not have to melt it down, you are basically reusing the chain- reuse is actually better than recycle as it requires little or no energy to do it.
Works with almost any effects pedal.
Easy to change- easier than zip ties, and you can use the same link and screw over and over, until your board is more "hole" than 'board."
I like it better than silicon, too- no waiting for the chain link to dry!
Good on you, mate!
Oh, my favorite pedal board blank- wooden wine boxes. The lid becomes the board, the box fits over the pedals, with 4 latches from the hardware store, you are set to go. Some of the boxes even have handles (usually rope) on them. No need to disguise their origin- they look way cool in their original finish, and age well.