Nice picture!

Well, remember, there are many types of Geckos!

Leopard Geckos are the most common. However, Rhacodactylus are Geckos too and are pretty neat! Just ask Ferry or Ezzy! However, I wouldn't necessarily recommend a Leachie for a youngster. They can, and will, be very cage defensive. Ezzy tried to take my finger off today! I use welders gloves from home depot (best $25 I ever spent and a lot less than stitches ). However, 90%, they are total puppy dogs when out, especially if you work with them. If you get them younger, or buy from a reputable breeder, who knows his/her animals, they can point you in the right direction. However, as with Ezzy, even totally calm Leachies, will PROTECT THIS HOUSE! I just use the gloves, grab her, and she snaps right out of it and I can immediately use my other hand to hold her with zero issues. However, she will go after the glove from time to time and that might freak out a young guy like your son. However, it's no different than tap/hook training a boa.

Chewies (like Ferry) and Crested Geckos, etc. tend not to do that at all.

Anyway, I digressed, many cool geckos, and happy to help there as well! Or not, whatever works for you EL-Ziggy. I take no offense!