I figured out how to duplicate the lock idea that they had, but was unable to make one as small as they had. So after some time went by, I figured out how to make a magnet lock out of some materials that were lying around the house. Below you'll see the two different designs, but I'm only showing you how to make the one with the "Latch's Path". Unfortunately, you need a strong magnet to use this even for a thin door. I, of course, lack the strong magnet needed to operate this lock right now. You can see in the video that I was able to get the lock to respond, but the magnet was too weak to attract the latch all the way.
The thicker the material you use this latch on, the stronger the magnet you will need.
Movie is attached below...
1. Soda bottle cap
2. Plastic Shim (small piece of plastic/metal. Metal would probably work better to attract the magnet)
3. Drill and drill bits
6. Screw Driver
7. Metal pieces like small screws (not needed if you used ferrous metal for the latch)
8. Strong Magnet
10. Solder Iron
Warning: Soldering Irons get extremely hot. Use with caution. Use in well vented area. Do not breathe in fumes from melting plastic.
These are ideal for locking the household chemicals away from kids while not having ugly locks in view on the outside of the cabinets.