In comon with many who commute by bicycle, I use Shimano SPD pedals on my bicycle (see link). They are fantastic - small recessed metal plates (cleats) bolted to the bottom of my cycling shoes clip easily and securely to these pedals and can be released by twisting the foot sideways. They vastly improve the efficiency of pedalling and I'd recommend them to anyone.What I'd like is if more thing were fitted either with cleats or the clip and release mechanism. Then my cycling shoes could clip into rollerblades, giant bouncy spring feet, pedalo pedals, etc.-- hippo, Mar 26 2007 Shimano PD-M520 Pedals http://www.wiggle.c...e&ProdID=5360008792 [hippo, Mar 26 2007] Bun for making pedalo travel vastly more efficient. Very important, that.-- moomintroll, Mar 26 2007 could there be heating up attachments for ironing clothes on the floor ?-- xenzag, Mar 26 2007 How about ceiling mounts for spine stretching.-- Galbinus_Caeli, Mar 26 2007 Good for tap dancing, too.-- nuclear hobo, Mar 26 2007 Fins and track spikes for the triathlon.-- GutPunchLullabies, Mar 26 2007 How about a path of clips up the side of a building to save wear and tear on the staircase?-- Galbinus_Caeli, Mar 26 2007 Would be an odd configuration for scuba fins, but (+)-- normzone, Mar 26 2007 Stilts please.-- MaxwellBuchanan, Mar 26 2007 The obvious complementary idea is surgically implanted cleats, so you don't have to waste time putting the shoes on...-- spidermother, Mar 27 2007 random, halfbakery