Surprisingly, I found my individual sleep cots on sale at Toys R Us for pretty cheap! Really comfy too. I've found individual items for the low on amazon.com. IKEA has cheap, kid-friendly furniture, utensils, etc.; check Wayfair, Target, Big Lots and for daycare specific items:
http://ecmdstore.com. Also, check out any local consignment stores for toys, high chairs, etc. For everyday activities, plasticware, and supplies you'll be surprised what you can find at Dollar Tree. Good luck!