(WIP) Phisics on furniture? (Patreon)

Hi! About a year ago, a user  u/Bunktavious left a comment under my post  BDSM Room and furniture on Reddit: 

" Just looking at this got me thinking - I'm wondering if there is a way to apply some amount of "give" to a prop in a scene? So that when you sit a figure on a chair say, the cushion compresses under them. Would go a long ways in adding realism to scenes. "

 Since then it haunted me. 🤔 And now I seem to have found a solution!  
So far this is in the test stage, but the time for new realistic furniture is coming !!!