Is this an okay gift for a teacher?

It really doesn't matter what you give this specific allergic teacher. If you have handcrafted the cards the teachers will be very amazed! Even if you didn't even make the cards, it's the thought that went into thinking about it; that anyone who recieves a gift is gracious of. Don't go to too much trouble! Expensive or inexpensive, handmade or not handmade it's the thought that counts.