Like, outside of VR, you just shoot into a tissue or whatever. What am I supposed to with VR games? It's not like I can hold a tissue in one hand and hope I aim well with the other. What if I don't want to cum on my floor or walls?

Toys!  Fleshlight etc.

You could dress your VR room like a murder room like Texas Chainsaw Massacre and cover all your furniture in plastic for easy clean up. Or just a towel or two would work.

The ideas people have shared are pretty fun! I hope others will share too!