yep, this does come up every once in a while. Its kinda fun seeing the creativity and energy people have for this subject. I think that pot scrubbers was creative and well, let's face it, plactic army men was THE winner for creativity for a long time!
I alo liked the creativity of car wash brushes there for a while! Then there was that honey comb box and hair curlers.
here is a nice media but crazy expensive because it is priced for the aquarium industry and sold in tiny quantities. But pretty good surface and spaces making it a quick conditioning and therefore, quick cycling surface.-JR