Aiyoh !!! Just take a 6inch Diameter Water Pipe and Glue one end together-lah...
Damn Cheap some more !!! Spray paint it, and add your favourite stickers
For the sponge, just steal your mother's Washing sponge. Not so hard leh !!!
Lastly, glue in a water-gasket, and anyone can lelong this "New Creation" for other CS'ers....