rummikub and "pegs and jokers" are the two we always carry along and also play at home.
Nice thing about both is that both are easy to play and easy to learn for anyone from about 10 years old and up. Our 10 year old grandson loves pegs and jokers.
And neither takes up much room.
Oops, and add dominos to the list. doesn't take up much room, just needs a flat surface, and then a "discussion" off which Mexican train rules to use......
2011 Keystone Outback 295RE
2004 14' bikehauler with full living quarters
2015.5 Denali 4x4 CC/SB Duramax/Allison
2004.5 Silverado 4x4 CC/SB Duramax/Allison passed on to our Son!