What is your opinion on this idea?

As some of you know, my reception is at the Belmont Racetrack ( well all of you know from my profile ). We sent out STDs with the background of horses at Belmont and the other with a horse against the city skyline- here I'll post them...

Anyway, I am trying to decide on favors and come up with something original. Here is what
I came up with:
Horseshoes.
Real ones. If you hang them on your wall with the open side up- it means good luck. I was thinking of pruchasing them myself and then on the back somehow write our names and wedding date.

Do you like this idea? or do you think its dumb? taking it too far with the horse theme?

Second question- I am making my own invites with one of my BMs. She is coming over in a bit so we can get a picture of it in our mind. Do you think if I designed it in the shape of a horseshoe it would be a good idea? i guess the same questions as above apply here too?

Or can anyone throw out some other 'horse or racetrack' inspired themes????

Thanks for your help!