Get Your Passes
Spending so much time traveling, we visit lots of public land, national parks, state parks, state wildlife areas, and Bureau of Land Management land. Most have fees or passes. Some have day passes but we prefer the annual pass. I can see that collecting them could be its own hobby.
So far we have:
National Park Pass
Colorado State Park Pass
Colorado State Wildlife Area Pass
Colorado OHV Use Permit
We still need to get: Colorado Outdoor Recreation Search and Rescue CORSAR
Fees help to maintain the areas and trails, and pay the people who oversee the space.