If you haven't already, you should try to get to Watson Lake, Yukon. They have been collecting signs since WWII and they display them in a colorful sign-post forest. Of course, we had to add our own sign to the forest. Special thanks to my dad for making it for us. We had a lot of fun looking for signs from places we've been to and trying to find a small sign my nieces had placed a week or two before.
