There is a toy library within the Central Library in Hong Kong. Parents book a time period and children can play with the toys for 45 minutes at a time. This is administered by Playright in Hong Kong.
Based on the small amount of feedback from this forum, and some conversations with other parents in the area, I am working on feasibility of establishing a lending toy library in Hong Kong. This will enable parents to take age appropriate toys home for their children for either 2 or 4 weeks at a time. I have some information from the International Toy Libraries group, and I'm working on a charter currently to do this locally, if it is feasible, then it will require vounteer parents to assist in administration. And, it will take time - as with all good things.
In the mean time - to fill this need - I like the idea posted by Miaka for Yahoo Groups toy swap. I'm not very techy, but if you need any help to set this up, please PM me.