Walmart offers the Avery Round Removable Color Coding Labels 315-Pack for $1.12. (Amazon charges the same with free shipping via Prime.) Opt for in-store pickup to avoid the $5.99 shipping charge. That's tied with our July mention and the best price we could find for this quantity. (Many 3rd-party merchants charge around double.) These 0.75" stickers come in neon green, orange, and pink.