Step 1: Find a uncompleted renovation project.
Step 2: Determine how long you want the fun to last. ie, if you want it to last for ever, do something permanent. If looking for a temporary bit of laughter, we suggest something that can be removed or changed once the fun has been worn out.
Step 3: Determine how creative you would like to be. (This is usually determined by the kind of mood you are in, and who is around to influence you. In this case, my dear mother was nearby to 'set the tone' for the level of creativity and general "funness".)
Step 4: Choose your necessary tools.
Step 5: Begin by being creative in the most obvious spot; none of this 'test the product in an inconspicuous spot first' stuff.
Step 6: Have fun; nothing dampens creativity more than a droll attitude or demeanour.