I'm an urban inn and guests rarely spend an entire day inside, even if the weather is lousy. We have tons of free museums within a 10-minute drive. We also have cable movies on demand and on-screen movie rentals, which are used by a few guests every now & again.
I laughed a little at the board games folks mentioned. I haven't played Monopoly, Trivial Pursuit, checkers, or chess in ages, though my friends and I get together for game night several times a month. You may want to invest in a few more modern games like Bananagrams, Codenames, or Exploding Kittens (a little edgy, but still "clean") for $10 - $15 apiece. Power Grid is pretty cool game for a longer afternoon; it's $30. Pandemic is great, too ($20). Zombicide is super trendy and very involved, sometimes played over multiple days or even a week, but it's an investment at $50 (https://zombicide.com/en/)
A few sets of playing cards and some printouts of rules for Golf, spades, gin rummy, or any of the numerous variations of poker (https://en.wikipedia.org/wiki/List_of_poker_variants) would also be a lot more fun than monopoly..