Had a few last thoughts here:
Yaniv is a 52 card version of Cabo (also originally a plain deck game) that doesn’t require cards on the table. I think it was made for backpackers who wanted to play Cabo. It’s reasonably good when you want to kill time, have a deck, but not much of a playing surface.
Hive and Radlands (deluxe) are my two waterproof games. Definitely played Hive on a bar, good fun. I’ve seen Hive all sorts of places.
And I haven’t really executed on any of these, but I have a mental checklist of windproof games that could work outside. Tigris & Euphrates, Keyflower, and Lancaster are some good games with no paper or cards, just wooden tokens and heavy cardboard.
Regarding parties, I’ve had great luck playing Spyfall around a dinner table after everyone has eaten. One of the better sessions, period.
I’m not sure I’ve ever played Skull with the actual coasters? It generally just comes up, and we’ve played with a deck of cards, with marked advertising flyers, and even with sugar packets. I love this because it is the opposite of what American cities (maybe all cities?) have become - it can make any room feel positively Irish. Suddenly everyone is part of the same community. People swing by to watch, strangers start talking to you, everyone takes note when there’s an outcry around the table. Ireland is the only place I’ve felt that (outside of a Skull game) where strangers are suddenly family simply by nature of being in the same room.
I always remember the time that one guy (turns out he was a very good poker player) drew a penis on the back of a flyer and we all flipped his card all…night…long. Can’t forget that one.
Lastly, before Don’t Get Got was a thing I homebrewed a very similar game for our own party. Everyone got a dare on the way in and you simply scored for each time you executed it. Someone had to convince people that, technically, they were a Baron. Someone else had to slip as many different types of trees into conversation as possible. The absolute winner was the gentleman who was tasked to ask someone a serious question and then see how many hors d’ouvres he could fit in his mouth before the answer was finished. He executed amazingly.
In a similar vein, a SUSD podcast talked about a game called Sad Room. I don’t remember the particulars, but it’s for introverts at a party. You choose a room, and whenever someone enters the room, no one can talk. You can gesture and grunt and stuff, but you go until someone is forced to say something. Sounds like players had a great time and, usually, after the round was lost the victim would be clued in and would stay in the sad room for whoever came in next.