Reddit mentions of Munchkin 2 Count Door Knob Cover

First, I'd put away any of your fragile and expensive collectibles. Put them on a high shelf or see if you can keep them at a trusted friend's house.

Try to get a latch for your door or a door knob cover.

As far as babysitting, if you just do a crappy job, they won't ask you to do it (hopefully). If they leave you with them, call the parents constantly and ask dumb questions about childcare.

• "What do you mean I'm supposed to put a clean diaper on the baby instead of leaving it naked in the crib?"
  
  
• "What do you mean the small kid wasn't supposed to have candy for dinner?"
  
  
• "What do you mean I wasn't supposed to invite over my friend with a criminal record?"
  
  Better yet, leave the house as soon as the parents start heading for the door.

When I was little, we had these plastic things over the doorknobs, to keep littluns out of the dining room. They worked by squeezing, or by placing your thumb on the actual knob. Hard for a kid to figure out (they just spin over the knob if you try to open it normally), but easy enough by the time I was old enough to be allowed in there.

Sort of like this: http://www.amazon.com/Munchkin-Count-Door-Knob-Cover/dp/B007A2ZP6K/ref=pd_tcs_subst_ba_1?ie=UTF8&refRID=06GY0CDQ6P2M8SS2N7CC

It's easier to spend the 5$ on the handle covers though.

This is basically the go-to babyproofing method for door knobs:http://www.amazon.com/Munchkin-Count-Door-Knob-Cover/dp/B007A2ZP6K

Door knob covers worked really well for us if you have the right type of knob.

We've had to get some of these (this style, not this brand specifically). Bonus fun: watching grown ups who've never seen them before try to open your door lol.

https://www.amazon.com/Munchkin-Count-Door-Knob-Cover/dp/B007A2ZP6K/ref=pd_sim_75_2?_encoding=UTF8&pd_rd_i=B007A2ZP6K&pd_rd_r=GP3JXZH84EYC0RM2P4T2&pd_rd_w=wQhaJ&pd_rd_wg=1ljmV&psc=1&refRID=GP3JXZH84EYC0RM2P4T2

The round ones are super easy to use though....

1. Snap on a baby-proof door knob cover. They're sold any place baby supplies are sold (K-Mart, Target, Wal-Mart, etc.).
   
   or...
   
   
2. Install a locking doorknob in reverse, so it locks from the outside. Use the kind that unlocks by simply turning the knob from the outside. This bothers some parents, but you'll eventually stop locking your kid inside and eventually replace the doorknob with a non-locking one as your kid grows. As a safety measure, hang the back-up unlocking pin someplace high up on the inside of the room in case a parent somehow accidentally locks himself in the room.
   
   Install a gate at the top of the stairs. Be exceptionally watchful so that you know beforehand when she's getting mature enough to defeat the gate.