I am currently without a functional MAME machine at home (still have the cocktail at the cottage) and had a craving to play Joust, so I hacked together a single player CP (using materials on hand) for use with my notebook. I geared the panel towards classics (all leafs, 3 buttons and a 4-way Wico).
When I showed it to my 5-year old son, his only comment was "Daddy, I think it's broken ... it doesn't make any noise."
Cheers.