John's "foil the climbing toddler" babyproofing:
My first son was very tall as a toddler and an excellent climber. Whenever he was being 'too quiet' we would find him climbing onto the dining room table and often spinning the hanging light above the table. While at Lowes I stumbled upon the answer to our problem. Tie down straps! These are the straps used to secure items in the back of pickup trucks. There is a hook on either end of a flat nylon rope with a ratchet in the middle to pull it tight. My wife thought I was nuts, but I hooked the chairs on opposite sides of the table and pulled the rope tight. Voila! Our son could no longer pull out a chair to climb onto the table. The ratchet made it easy to loosen when we needed to use the chairs and to re-secure. My wife was easily won over to the idea when she realized she no longer needed to worry about our son taking a header off the table. We used them again when our second son reached the climbing age and I have them ready in case our daughter takes up climbing too.
This scores a trifecta as a dad's solution: it was ugly, effective, and required a trip to the hardware store.