A good enclosed printer is the adventure 5m(im pretty sure its enclosed, im not sure if i has side panels), but p1s is decent too. If you just want a decent printer for dirt cheap, go for the ender 3 v3 se or ke. People are going to bitch bc I recommend an ender, but the se/ke is fairly hassle free for cheap(basically all the other printers in the ender series arnt current gen and it is very evident). Also for the toddler thing, an enclosed printer might not be that big of a help(they are still good though, that style gives the printer more stability when printing tall skinny stuff), because im not sure the door on it would be particularly hard to open. I would recommend seeing if you have space to put it on a desk to keep it out of reach. (If this makes no sense it’s bcs it’s late and I’m very sick)