is there an ampersand die out there?

scrappington  Lil' Inker has a set of dies, although they're out of stock at the moment.

Here's one from PTI.

EK success also has a punch

And you can always find one in your word processing program - print it, resize it, the cut it out by hand! Or "reverse" then print on the back of the pattern paper and cut it.
I think we too often forget about the "old way" we did things! I can remember talking with friends wishing for letter punches v. spendy letter stickers! Now we have a TON of ways to cut letters!

If you have an electronic cutter (or have a friend with one) you could cut one in any font you like, and in any size you need. I know I have a few fonts that are very similar to those dies.