Whip up a basic shoe on the spot using this basic flat bar stock.  Use a creaser to add your own v-crease and nail holes.

Check out Youtube for shoe making videos. Also Farrier Products.com has scores of great videos on every aspect of trimming and shoeing a horse. 

*Price includes UPS $6 oversized handling fee. Sorry about that. UPS charges extra for odd shaped packages that won't ride their conveyor belts. They have to hand carry them.  Sad I know but it is what it is.