I just recently ordered a few supplies for a bee and polka dot theme baby shower (collection in the works) from Sally at Polka Dot Market.  I chose Polka Dot Market because of the price and the fact that I would be supporting a small, home-based, Christian business like mine.  Some of the offerings at Polka Dot Market:

Polka Dot Lanterns

Polk Dot Lanterns from Polka Dot Market – $3 each

Balloons

Polka Dot Balloons from Polka Dot Market – $4 for pack of 5