to avoid muscle/tissue damage, i recommend you start with smaller, rounder amiibos (like captain olimar) and work your way up to the larger ones. don’t start with 8 bit mario! your mouth will thank you
if you don’t mind my making a suggestion, the animal crossing amiibos are a great choice for beginners - they can easily be obtained for less than MSRP, and are small enough to avoid straining untrained jaws (mabel is an exception to this, however)