Mine cost around $6-7.
1 (50lb) bag of play sand ( at Lowe's for $5.00)
1 storage bin with lid - the under the bed type of container is better. We already have this so that saved us a lil bit
sand toys - target has a good variety of affordable even dollar sand toys. You can always count on the .99 cents store too.
measuring cups ( extra cups that you have in the kitchen that you rarely use)
* Just pour the sand in, add some toys, and you now have a toddler sandbox. The lid comes handy since there's a lot of stray cats here in the area. ( sprinkle a lil bit of cinnamon to avoid ants.)
Easy right? I promise you .. Your kids will love it!