> a board game night as Free activities!

https://boardgamegeek.com/boardgamecategory/1120/print-play

&

https://boardgamegeek.com/forum/974620/bgg/design-contests

BGGs site is always a bit confusing to me to navigate, but searching for "pnp" or "print and play" and a contest year will probably surface a lot of good "free" (or at least, free to print....) You can at least certainly get a bunch printed for cheaper than 1 boxed game and if you dont like half of them, no drama.

Shutup and sit down has done a few round ups of solo-print-and-plays https://inv.tux.pizza/search?q=shut+up++and+sit+down+print+a.... I'm sure there are people on here that can recommend some +1-player pnp games.