where can i find some Arrow Nocks to replace the ones that my little brother lost when he shot his bow?

he is so upset because i just bought these new arrows today at bass pro shop to replace his old and worn out ones with.and he just shot 3 of them about twice and the nocks flew off and can't find them.

i been to every sporting goods store in my area and they said it's too early to have them in stock.i don't know any bow shops in my area that i can go to and buy some. i was thinking about taking these arrows back and tell get some more of a different kind or something.

any sugestions i hate to have to go back out and pay over a hundred bucks again but i don't have no other choice if i can't find some more nocks for these arrows i got before saturday.