IKEA kitchen drawer lock/falling out problem solve

If you have a problem, that things are falling out of your kitchen IKEA drawer, you can use locks to solve the problem. I tested it on PLA, PET-G and ABS, all works Simply design, parts are clicking/locking each other and also to the drawer's construction. I have to types of drawer - deeper and shallower - so two types of vertical locks. Horizontal lock is the same for all. If you don't know, if it is useful, ask your wife or mom :-)