I've been working on a project inworld for a while called "The Hideout" which is built as a social area for ABs, DLs, BabyFurs, and is also Child Friendly...
The place has a Treehouse (With changing station), Park, Movie Area, and my other avies store (ToyBox of Random) which to mark the opening has all of its "CasperVend" vendors marked down to 50%.
Notes: I do allow adult RP, but if a child avy is near by the RP must be moved to your IMs, this is purely due to Linden Labs' Rules... also no nakedness, unless your being changed... 'cause i know that sometimes can't be helped :P