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Amazon.com has Command Decorating Clips, 40 Clips and 48 Strips, Damage-Free Hanging Light Clips with Adhesive Strips, No Tools Small Wall Clip for Hanging Lights and Cables for Back to School Decorations for $1.41 with Subscribe & Save.
Shipping is free with Prime or on $35+ orders.

Walmart.com [walmart.com] also has Command Decorating Clips Value Pack, White, 40 Clips, 48 Adhesive Strips for $1.48.