Yep! Go to Home Depot or to Lowes and puchase just enough chain length and size that is appropriate for your bunners. Install snap fitting at one end and make loop at other end for your hand and voila,` one rabbit leash at hand!
Dog leashes are often too heavy in weight or gauge for buns.To light a weight or guage means the links may not be strong enough to keep your bun in check and may pull apart. (figure out how I learned that one,LOL!)
Buying at home service type centers mean you can get exactly as much "leash" as you want to custom size for.
Buck