Save the Dates

My mom's friend found a bunch of clearance invites marked down to $3 at michaels. They really aren't what we were thinking of using for the invites.. but she'll be mad if we don't use them at all..

So I've been thinking, We have 100 blank printable invitations that we don't want to use for our wedding invitations. We won't use that many for either our shower or our rehersal dinner. I was thinking of using them as save the dates, but I have my heart set on magnets.

Would it be okay to print pretty much what we are going to say on the magnet on the "invitations" and put them in with the magnets? or would that be redundant?

Or anything else we can use it for as an insert for the magnets?

I'm just not sure what we are going to use them for...