Love it! -
I have fitted my Granddaughters small clear plastic juice bottles to my new Sonex/Rotax.
The pop tops can be drilled for a nice tight fit for the size of hose to be used.
The flattened sides and narrow neck make zip/cable tying to airframe a doddle.
Be sure to drill a good number of breather holes around the neck and push the hose in at least 1/3 + of the bottle height.
I have one each for oil breather - fuel pump drain and carburettor float bowls.