I am also a non-babyproofer. I mean of course, to a degree, but not really. I don't use gates. Before I had kids I thought oh sure I'll use those, but honestly, they get in my way and I'd rather teach my kids how to use stairs appropriately. Both my kids were very skilled on the stairs at early ages and suffered no major injuries from it! I move stuff off of shelves and tables that can be broken or can harm the child, but I still have breakable stuff and furniture that is not anchored to the wall.
I agree that first you have to figure out what your kid is into. My son is so much into buttons...he will change the dishwasher, washing machine and dryer while they are in cycle or he will start them up. UGH! So, I popped the knob of my dishwasher and use the childrpoof settings on the other and that problem is solved. I also just taped the door to our entertainment center shut b/c he kept opening it and turning off the cable box. So, yes, this is childproofing, but I don't think you need to start out by buying a whole bunch of products and going crazy about it.
Things like vacuums, etc. are easily accessible to my kids and sometimes they go for it and others they don't. With toddlers you're more likely to see them fixate on one item for a month or so and then move onto something else. By that time whatever the previous thing was doesn't hold much allure for them, so it's "safe" now.
If your child turns out to be a climber, then yeah, nail that bookcase to the wall, but just wait and see. Of course you'll be with them or in the next room but they can climb in a second and that thing will come tumbling down...but if your kiddo has no interest in it except for tossing all the books to the floor, don't worry about it.
Anyway, this is a long answer for basically saying, don't stress, wait and then see what the big issues are!