BUNMO Stretchy Strings - Sensory Toys for Toddlers 1-3 - Stimulating & Addictive Sensory Toys for Kids with Autism - Fidget Toy for Anxiety & Stress Relief - Hours of Fun for Kids - Smooth 6pk 6 Smooth is up for auction in Toys & Games. The current bid is $4.00, 56% below the $9.00 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.