What fun activities can we do in and around Somerset?

I'm spending 7days next March in Somerset in the Ilminster area with the mrs. We're looking for fun activities we can do and best way to enjoy the local area. We're happy to drive to drive 20-30miles out if required.

We've both never been to that part of the country, so we're looking to explore, but the city/town and any nature.

I'm open to all suggestions. Ta