Agreed on aperture fever. I find 10" the largest manageable size unless you get an Obsession Ultra Compact for $$$$$.
Didn’t really consider binos for OP since viewing anything more than 45 degrees up is a pain without a proper mount. A dob is easier to use near the horizon than using a bino to view straight upwards.
I mean, FWIW, if it’s made for a 1-4 year-old it’s probably at least non-toxic to consume.