SYNCFUN 9 Pack Large Pop Tubes Sensory Toys Up to 27.5" Fidget Tubes Party Favors for Kids Connectable & Extendable Stress and Anxiety Relief Stretchy Toys for Boys Girls

These are brightly colored in a wide assortment of hues. They pop really well and have a nice texture. They make perfect sensory toys for babies and toddlers, though until your LO is strong enough to stretch and compact them without help, they're best for parent child floor time. That was our main purpose for them. The quantity is perfect for a kid or two to enjoy, since there are plenty of spares without being overwhelming. Pro tip: if you don't remember the 90's, this trick might not be obvious. Stretch a tube out all the way, hold it at one end, and swing the other end around rapidly overhead like a helicopter rotor for a whistling sound. The faster you swing the free end, the higher the pitch of the sound.