Child-proof book shelf

thingiverse

If your good books are also a year old's favorite toy, this device can safeguard them and save time by preventing endless floor pickups. The lock mechanism fits neatly into a standard 32mm hole spaced bookshelf, requiring rods with a 16mm diameter in the correct length. To enhance the fit, I wrapped Teflon tape around the pins. It worked flawlessly for us, but if your kid leaves your belongings untouched, this device won't be necessary.