Well depending on the hamster breed and age, probably not. They may think it's food and choke on it. So I advice you do not leave your hamster alone with yarn.
Textured yarn has for lack of better words a texture like confettie, eyelash, or fiber look to it. Micro yarn is very thin yarn.
Yarn Twist
no hamsters do not like brightness i can stun them or even kill them
Hamsters do NOT like to be hugged at all. It squeezes the air out of them!
Even smaller Hamsters.
regular hamsters
hamsters are rodents
It's like a ball of yarn for the cat to play with.
Extra heavy yarn like on a mop-see below link
There have been studies that suggest that hamsters do like TV. In all of these studies hamsters have been shown to be stimulated by TV.
You can create an obstacle course with a ball of yarn in the house and hide something like a trophy or something of lesser value (magazine) and go through the yarn to get it. Think of the yarn like laser tripwires and don't touch them for a true challenge.
Hamsters eat anything from curry to ice cream. They eat anything, trust me. Hamsters may like or not like mushrooms.