This Wall Mount Connector by Playpen Pro takes your standard foldable Playpen, and adds the ability to connect sections to your wall. 

Designed for Albott Baby Playpen, but should work on most other playpens with the same connector type.

Contents:
2 x White Gate Connectors
2 x 3M Command Strip

If you do not have the Albott brand Playpen, please measure your connection before purchasing. The fit will be tight, as to prevent coming disconnected or moving. The dimensions should be:

Upper Post: 13.36mm / 0.526in
Lower Gear: 23.29mm / 0.914in

If you find that this works, or doesn't work with other playpens, please send me a message and I'll add it to this list.