A simple frame for an acoustic panel. Add stuffing and fabric. Hangs on the wall!
Modify it to your liking here:
https://cad.onshape.com/documents/72e05521b098b3cec54be958/w/5a1acabd0969b050f2ee4aea/e/1d1eee0c68a8c6e09544a65d?renderMode=0&uiState=64bec0d566410f6845946d39
As seen in my upcoming video: https://www.youtube.com/watch?v=U9kND5i_FZk