Budget snacks and supplies for family game night.
Game night is cheap entertainment, but the first one costs more than the ones after it because of the game itself. Separating the one-off purchase from the recurring snacks, drinks and prizes gives you two useful figures: what tonight costs, and what the same evening costs next month once the game is already on the shelf. On these defaults that is 109 dollars tonight and 74 thereafter — under 13 dollars a head, which compares extremely well with any night out. A board game bought once and played twenty times has an entertainment cost per person per evening measured in cents.
Game Night Budget
Snacks and drinks = guests x (snack + drink cost); total = snacks and drinks + new game + prizes; repeat night = total - new game
Around 10-15 dollars a head for snacks and drinks, plus a share of any new game. Repeat nights with games you already own fall to under 10.
A bring-a-snack or bring-a-drink arrangement is common and cuts the host's cost to almost nothing. It also tends to increase variety.