As a reptile owner myself, not any small vegetarian reptiles I can think of. I’d suggest green or brown anoles, which can eat crickets, mealworms, and dried bugs. I’ve owned them before, and they make decent pets once they get used to you. A few of em are jumpy, or could bite (in self defense, like any other frightened animal) but it doesn’t hurt or draw blood unless you’ve got a huge male (which is unlikely). At the moment I own 2 leopard geckos, and they each live in their own 20 gallon tank. Very sweet animals usually, and get up to a foot long when fully grown. The only downside is weekly trips to get crickets for ‘em. I feed mine 10 crickets every 3-4 days.