Horseshoe Points
From My Little Wiki
Horseshoe Points, or Pony Points during Generation 3, were printed on the packaging of G1, G2, and G3 My Little Pony brand products. These points were redeemable for various Mail Order exclusive ponies and merchandise.
Generation 1
Generation 2
During G2 pony points were redeemable for:
Generation 3
The points were renamed "Pony Points" for G3.