You could make them into gates, a trellis for a vining plant, many things.
You can make a bench.
Hi JoAnn. I'm Cindy. You could use the crib rails in the garden. It would work great for cucumbers, green beans, squash, and any other plants that vine. You could also use the crib rails for a pot holder in your kitchen. Just hang it from the ceiling and use S hooks to hang your pots and pans. Good luck JoAnn.
You can repurpose them into laundry drying racks.
Just a thought, but could you use it in a closet as a coat rack or shoe store. You could add cup hooks to the top for coats, then the rails would hold scarfs, belts ties. Add butchers hooks for bags. Some shoes like high heels might sit on these rails without falling. If it's set a few inches out, then other shoes might be stored by putting thier fronts in first.