Sploosh

Step 4 The Chutes

Choose the largest, flat-bottomed guttering you can find. Cut to length as shown and glue Lego baseboards (usually sold separately in toy shops) into the bottom of the gutters. Putting end stops at the high end of each chute helps cut down splash and the "canal" section that sits flat onto the frame cross pieces.

Chute 1 is 80cm long with 1 end piece
Chute 2 is 1m long with 1 end piece
Chute 3 is 1m long with 1 end piece and 1 90 degree bend
Chute 4 (the canal) is 1m long with 2 end pieces, one of which is cut down by 2cm to let the water flow out.