Jollyball Tug n' Toss 10": http://www.amazon.com/Toss-Jolly-Balls-Asst-Colors/dp/B0006G581O/ref=reg_hu-rd_add_1_dp

If it freezes where you live, and you want to play in the winter, a Frostbite disc: http://www.amazon.com/Hyperflite-K-10-FrostBite-Dog-Disc/dp/B0006MT7N8/ref=reg_hu-rd_add_1_dp

Hyperflite Comp Standard discs: http://www.amazon.com/Hyperflite-K-10-Competition-Standard-Disc/dp/B002SVTLCM/ref=reg_hu-rd_add_1_dp

Also, as Khabi said, don't play disc with a puppy. But since you're adopting, you should be fine. You're awesome for considering that!