I don't understand not opening them... they're toys!
I stood in line outside Target and bought my daughters (they have to share) a Rosalina when they came out. The opened it up within minutes and she was playing with the other Amiibos in their dollhouse and train sets.
My wife told me I was crazy for letting them play with such an expensive toy.... but it's a TOY!
Eh? Amiibo is an expensive toy? Show her the Elsa dolls that had limited release last year