Do you keep outgrown toys around for friends' children when they come over?

I have a fisher price rocking puppy, a ride on 4-wheeler, and two ride on/push-to-walk toys that my son outgrew about a year or so a go. For a while I'd bring them out of the closet when some friends with younger kids came over to visit, but the older kids always wanted to play on them too (my 4 year old and their 6 and 7 year old). They're pretty much just taking up closet space, but I'm wondering if I should pick just one (maybe the 4 wheeler?) to keep around just in case or if I should send them all off to new homes. What do you guys do?