There have long been small decks of cards. Farkle and Yahtzee are usually played with standard dice, but mini dice are readily available and save 80% of the weight.
I just received a dozen ($17 for 12) of these:

as a mini and off-brand version of Boggle. It’s smaller than it looks in that photo, the printing isn’t great and the vowels to consonants ratio isn’t quite right for English, but it weighs only 20 grams.
Do have non-electrical games you like to bring on a winter cabin trip or pack in the travelling bags with kids along?

