Answer:
They can float and tickle, but their sound is rarely heard unless you're a pillow or bird. What are they?
When young, I am sweet in the sun. When middle-aged, I make you gay. When old, I am valued more than ever.
I bind it and it walks. I loose it and it stops.
I drift forever with the current down these long canals theyβve made, Tame, yet wild, I run elusive Multitasking to your aid. Before I came, the world was darker, colder, sometimes, rougher, true. But though I might make living easy, Iβm good at killing people too.
My first is in some but not in all. My second is into but not in tall. My third in little but no in big. My fourth in port but not in pig. My whole is made in nature's way. For clothing, rugs used every day.
People take me on walks and I run and have fun. What am I?