Hack a Toilet for free water.

Step 3 Cut out the lid

Cut out the shape of the lid with a jig saw from the wood and clean up as necessary with sand paper. Now take the paper tracing of the tank and cut on inside wall line with scissors. Now center the tracing on the new wood lid, and take the center punch and mark the center of over flow tube on the wood lid. Using this mark as center drill a 3 inch diameter hole with the hole saw.