Three suggestions:
- Any short story collection by Issac Asimov (preferably something like I, Robot - not like the movie at all). These are light reads, but can be really entertaining so easy to ease back into to.
- Discworld Series - really let's your imagination go wild. They may be a bit too much like hitchhikers for you, but its fun light fantasy by a great author.
- V.E Schwabbs "Shades of Magic". Interesting story with a decent magic system that feels a bit like Avatar (cartoon) in a Young Adult Fantasy setting.