Idaho offers an "Annual State Park Passport" that allows you to bring your vehicle into any of Idaho’s state parks for the day as many times as you wish during the calendar year without paying the Day Use Vehicle Fee. There are also discounts for eldery, disabled, and low-income residents.
Indiana provides annual calendar year passes for residents and non-residents. There are also permits for horses, motorized and non-motorized boats, and a discounted annual pass for senior citizens
Kansas offers annual calendar year passes. The passes available are for vehicle entrance (a discounted version is available to seniors and the disabled), camping, and a trail permit that allows use of the Prairie Spirit Trail.
Kentucky does not offer annual passes to its state parks, but it does maintain a page that lists any current discounts you can receive on camping and lodging. Kentucky POWs can camp for free if they obtain a POW card issued by KY Dept. of Parks.
An Annual Pass is available for Louisiana State Parks that allows for unlimited day-use at all sites for all people in one non-commercial vehicle. The pass can be bought at any stat park, and is valid for the duration of the calendar year.
Seniors will receive a discount for day-use entry if they show their driver's license.
In addition, anyone in possesion of any National Parks Pass may be entitled to a 50% camping-fee discount at any Louisiana State Park.
Maryland offers a "State Park Passport" for bot residents and non-residents. The pass is good for an entire calendar year and offers: unlimited day-use entry for everyone in the vehicle to Maryland's state parks and Cedarville State Forest; unlimited boat launching at most facilities; and a 10 percent discount on state-operated concessions and boat rentals.