A good place to shop for sippy cups

[Babbykitten]

[_Unicorn_Princess_]

Dollar Tree/Dollar Store and Walmart maybe?? Or if you're into it.. thrift stores might have some cute stuff too!! 

[Quirkygrl16]

I got mine at Walmart

[Guest glitter bunny]

they have really cute Sesame Street ones at Dollar Tree and matching pacis. Walmart/Kmart/Target would be great places to check out too. 99 Cents Only has  a very lacking selection.