K'Nex "handles" help toddlers reach the light switches
Our toddlers would get very frustrated that they could not reach the light switches, and we always had to turn on the lights when they wanted to go down to the basement. We solved this problem by creating a simple “light-switcher” out of 7 ordinary Knex pieces. With this, even our 3-year-old is able to control most of the lights in the house. When the device gets lost, the kids even enjoy building a new one all by themselves.
It's amazing how much frustration we can avoid when we simply remove obstacles to our kids' ability to do things themselves.