Surely you can still build and invent things in your spare time, even while studying for an arts degree.
My son was always building stuff in his spare time (almost exclusively computers from the age of 8 onwards) and went on to take a specialist IT degree.
My daughter was always drawing and creating things in her spare time (every waking moment really
) and went on to do an arts degree.
They are like chalk and cheese, just like chips off the old blocks.