Some years ago I made myself a fair isle shawl. I used about 25 different colours at random. The result was fun and original. It was also heaven to wear and suddenly I had people asking me to make more. Since then I have sold many.
They are made on my vintage knitting machine and each one takes about two days. With between 20-30 colours in each one, they are never quite the same but they are always gloriously warm.
Now I also occasionally make less dramatic knitted shawls, with perhaps just two contrasting colours.
All the fair isle shawls are made from 100% wool and should be hand washed and dried flat.