Kid's building blocks promote creativity and help develop logic & reasoning skills. On Time Supplies offers discount bulk pricing on fun, colorful kids building blocks. Even better, we offer same day shipping, so your k-ids building blocks arrive in just 1-2 business days. Questions about kids building blocks? Contact our customer service team toll free at 1-866-501-6055. We're happy to answer questions about any of our craft, rec room & discount school supplies.