Pinning the characters

My original idea for fixing the characters was to use magnets, but after experimenting with a few different way I have concluded that the most effective and simplest way is to use pic holes.
I have been hammering thick and sturdy pins through the paper and into the wood of the paths in my sets. The characters will then be pinned down using thinner pins which are pushed through the character's feet and into the holes.

I have tried a few different materials to use for the feet but have discovered that cork is the best. It is easy to shape, light and can be pierced with the pins a large number of times befor it starts to disintergrate