I might have something out in the garage, I have a lot of hooses on spools, maybe like hoses used for windshield washer fluid....My first attempt was using air line hose from an aquarium, but you may be right witha rubber hose that would expand a little easier......give me a few days to try out a few things and I'll get back to you on the results.....
this may actually work!
this may actually work!