You can check them in this git repository.
There are three sets of exercises:
- beginner - 5 exercises with extremely detailed hints, appropriate even for people with no Javascript knowledge
- intermediate - same 5 exercises, except without all the hints, appropriate for people with some Javascript/DOM skills who want to learn Tampermonkey
- advanced - some more complicated ideas if you need inspiration for more
I'm not sure how useful it is without 5 minute introduction on how to install and use Tampermonkey, but give it a try.
