I have 2 kids. My daughter is 4, and my son 3. I used to have a studio here in the house, but last year moved everything out to a "real" studio... lol.
Anyway, they spent a lot of time in my studio at home, and still spend quite a bit of time with me at work.
I never did anything different. Not one thing. I just kept any eye on them when they were little, and as they got bigger I just told them what not to touch. They pretty much did what I told them. I had them unassign all the buttons on my folcrom a few times..... but I knew how they went so it wasn't a big deal.
Good kids... no problem.
p.s. With your first kid you go around the house trying to decide if the cushions on the couch are too rough, but by the time the 2nd one comes around... you leave forks and knives laying around on the floor....
.... I am exaggerating of course..... but don't worry... it's not a big deal. They are hard to break.