Possibly getting a frog? :\

[mainbutter]

There are lots of different frogs out there.

Pacman/horned frogs are pretty popular, and for good reason. They have pretty colors, and are kind of funny looking because they are so chubby. A big, pretty, ornate horned frog is always a crowd pleaser. They do well at slightly above room temps and don't require complex misting or filtration systems. Coco fiber, a few hides (I use live plants), a UTH on the side of the tank to keep temps a bit warmer, and a tupperware sunk into the substrate to provide a soaking pool and you're good to go. They eat bugs, so taking care of a frog also means taking care of live insects. I have my own dubia roach colony, but lacking that having a horned frog also means regular trips to the pet store for crickets/roaches/worms (i do NOT mean meal worms). Dietary requirements are usually where people go wrong with these guys, so consult care sheets.

Pyxie frogs are also neat, but they're in high demand and low supply right now. I don't know anyone with them in stock. A local reptile store got dwarf pyxies in, but really the point of having a pyxie is to have a giant frog who weighs a few pounds.

I'd seriously look at toads too. Toads are really neat, and many species including native north american varieties are pretty darn hardy. Marine/Cane toads are popular, as are colorado river toads, and the plain old "american toad" is a fantastic pet as well. I also find that toads are among the most active amphibians out there.

If your son is more interested in the smaller or more arboreal frogs out there (poison dart frogs, red eyed tree frogs, other tree frogs etc) than the land-based ones I've been recommending, you'll find yourself needing more precise husbandry and more complex setups. That isn't exactly bad, but it just means you REALLY have to do your research.

I just want to say that for any amphibian, handling is pretty much a no-no. These are display animals, and except for the rare photo shoot or quick look-over to ensure they are healthy, they really shouldn't be handled. If your son isn't happy with that, he probably doesn't really want a frog or a toad.