Flip flops at Target are $2.50. Print out a Target coupon for $2 off women's sandals and ta da! 50 cent flip flops!
I'm not doing the basket for my wedding, so I'm not sure how many coupons it will let you print out. However, if you have multiple computers/friends, you can get a whole bunch!
http://coupons.target.com/apparel-accessories-coupons
