Walmart currently has some cute sleepover sets for $10 to $20. FREE shipping on $35 or FREE store pick up.
These look like they would be fun for camping or everyday use too!
These kids sleepover sets come with slumber sack, eye mask, and a carry bag:
These kids sleepover sets come with a slumber sack, flash light, and hamper:
Be the popular boy of the party with one of these cool 3-Piece Toddler Slumber Party Sets blend Slumber Set, Flash Light, and Bonus Hamper. The sleeping bag is made from 100 percent polyester so it is soft and comfortable. The three piece combo set is made to accommodate your perfect sleepover party. Just place the slumber bag and bonus flashlight into the hamper so that you and your child can easily travel to the sleepover party destination. When the Slumber Bag is unrolled, it measures 46 inches long by 20 inches wide, making it just the right size for your child to snuggle into comfortably. When the slumber party kit is at home, the hamper can even be used to store stuffed toys or other things in the bedroom. The colorful hamper is portable and lightweight. Slumber Party Kit with Bonus Flash Light makes an ideal gift.