My childrens' laughter.
Good food, preferably with decent wine.
Couple of weeks ago my son and I took the 5-hour ride down to Asbury Park, NJ to go to the Silverball Museum. (http://silverballmuseum.com)
185 working pinball machines from the 30s to the 90s, all in good condition, all set to free play. $20 for a day-long, come-and-go pass.
Best two days ever.
Nice to see some of us are still kickin' it old school!