You should be able to make the ragdoll sit. Way no 1, a torso weld joint thing. Way 2 [More complicated] Make one leg physical and and another ghost. Same for arms. And the ghost arms and legs are facing the same way as the physical arms and legs, and the ghost body parts go through the physical ones. +1 for agreeness.
Hey 0rava I made a toilet, can you add it? http://imgur.com/Ptu19ub And these too. Headphones http://imgur.com/zWBO0ox Keys http://imgur.com/fR9l0nh Tactical Knife http://imgur.com/CFdsiJa And Laptop. http://imgur.com/bE7am4h
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Apart from some obscure hotkeys and QoL features, not particularly no. It's a sandbox so keeping secrets would kinda defeat the purpose.