We had the book study at our small home when I was a kid in the late 60s.
Mom loved Star Trek, so she made a ton of popcorn afterward and half the Bookstudy stayed after for popcorn, cocktails, and Star Trek. lol :)
In the early 2000s, we used to have "Goodies" night once a month in my California Congregation. We turned that into a weekly event at the Bookstudy I conducted and added Wine and cheese. It increased attendance!! lol.