What is the length of the timer?
The timer isn't exactly precise, but it is around 2 minutes.
Is this small enough to be used by a person with a very small hand, like an 7 year old?
Yes. We bought this for our 9 year old grand daughter.
How many wacky tracks are there?
I bought the one I didn't have.
How squishy is it?
We are considering returning this junk because my 15yr old can barely squeeze it.
Are they sticky or smooth?
I love the smell of it with a little powder on it, it makes them very smooth and also smells fragrant.