Collections

Was thinking: I haven't figured out a way to display my padlock collection (yes, I have a padlock collection, from travels and such), and I could make custom little ceramic stands. I don't like the idea of putting them behind glass or hanging them on the wall because part of the fun is being able to pick them up and play with them. Now... what color? Subdued shades like the top row? Or neutral industrial tones like the bottom row?