It was definitely published before 1994, possibly published in the 70s/80s.
It was a collection of short stories printed in paperback, my copy was missing the from and back and the first page that normally lists the title and publishing info.
Each story was like 5-10 pages with some detailed black and white drawings on occasional pages.
There were 5 or 6 short stories in it but it’s possible there were some from the front or back missing since I received the book used.
There’s two stories I remember.
One was about a girl who became obsessed with bubble gum trying to blow the biggest bubble ever and she blew one as big as herself and it popped and she got covered in gum.
The other one was about a boy who wished he was invisible so he could sneak out of the house and join the circus.