Ping-pong (foosball, etc.) tables make me less likely to want to work somewhere. At an old job the foosball table was near my desk. Whatever little amusement I got from playing foosball was dwarfed by the annoyance of other people playing foosball while I was trying to work. Ping-pong would be worse because I'd be trying to get things done while balls are flying through the air near me.