For living amongst grandmas I’d probably just get a length of plastic coated cable. Chains are too heavy to deal with, and as others have alluded to are only going to slow a determined thief down. Cable is easier to deal with when threading through bikes without damaging stuff. Decent padlock, or even a combination lock so I don’t need to stuff around with keys on the end to something solid.
Cover the rest with insurance and possibly some stickers about cameras, or cameras if you can be bothered.