Also check out BLM campgrounds. In Idaho, they are $5 a night, $2.50 with your Senior Lifetime Pass! All FS CG's are 50% off with the Senior Lifetime Pass.
In Idaho, out-of-state guests have savings options too! You can purchase a $40 Motor Vehicle Entry Fee (MVEF) Annual sticker and receive unlimited access for overnight camping and day-use entrance to all of Idaho's 30 beautiful state parks- a savings of $5 per day. MVEF Annual stickers can be purchased at any Idaho State Park and online. If you're going to do a lot of camping at Idaho State Parks, then it's worth it.
