Stephen Lavelle has made a nifty little tool called PuzzleScript. With it you can make quickly make simple puzzle games that play right in your browser, so I cobbled together The Trouble with Toasters.
Set your expectation level to Atari 2600 era graphics and gameplay designed in a few hours.
Click here to play it. I believe the only way to control the game is with an actual keyboard, so, sorry tablets and smartphones