Child Lock for Ikea Kallax cubbies, you use these command strips to mount the child lock https://www.amazon.com/gp/product/B0751VFF2P/ref=ppx_yo_dt_b_search_asin
Demo of the lock : https://imgur.com/a/eIBReXt
Print at .2 with PETG (PLA will likely work fine as well)
No supports, no changes are needed, just print with factory PETG settings.
worked to stop my 1.5 year old from pulling out the boxes.
The author hasn't provided the model origin yet.