I have made mine for years,Yes there noisy but the pumps will run for about 40 hours or so maybe longer, Just a hint,
Get a 6pack size cooler with a top and then get a battery operated pump,
QUITE BUBBLES 17bucks and drill a hole in the top of the cooler for the tube and velcro the bubble box to the top.and your done.
When you get back home you can leave them in the garage and hook up a cheap fish tank pump 5 bucks. This has been working for me for years
and the real trick is get one that says QuiteBubbles because it really is quite.Also if you can find it SouthBend Makes or made a pump that was sold at K-Mart That was not noisy at all.It was Dark gray had rounded corners 8 buck or so. Sorry for the long winded post...........
RonP