clothes/dressing up - of course. Not only steampunk, I like period costume from ancient to 20th century, but steam is fun
books - only read one, it didn't grab me. I like reading but ...
music - yes. I like most music (rap isn't music) and steam gets in there
video - if you mean movies, yes. "Master of the World", "20,000 Leagues", "Mortal Engines" etc.
making - just getting into it
props - yes, as part of costume and sometimes the fun of designing
weapons - I put them under "props"
something I didn't list - I daresay

Antipodean, I take your point. Our annual Steamfest has seen some "body painting" which was very well done. I admit I wondered, given it was a family-friendly event, but I have heard no complaints. There's a photographer who attends various cosplay events who has a FB page - look for "steamkittens" and browse well down the page, or Google "steamkittens steampunk body paint" - and see what you think. To be honest, the paints looked tasteful, it was voluntary, and at a small distance good paint looks like clothing. I might have reservations for simply displaying bare flesh at a family venue. I would especially not appear myself, clad only in paint.