Asklemmy

Just in the Android games thing, a couple of recommendations:

• Golf Blitz - very fun crazy golf game which does have IAPs but they're not at all necessary to progress a long way in the game (in the very upper levels, it gets a bit slow as you need to build XP, but I've been playing it more than a year and never felt tempted to buy my way up the ladder. It'll certainly provide entertainment for a few hours. Does need an online connection though.

• Antiyoy - very simple strategy game that starts easy and gets very tricky. It's fun and no connection needed. Over 170 official levels, plus a whole bunch of user levels of varying quality. No IAPs at all as far as I remember.

I would recommend eating. Try a few places. That always passes the time for me.

The best advice of keeping moving has already been suggested, but buy a real book, and maybe a crossword or other such like. Avoid technology.

Try Dumb Ways to Climb. It's free without ads.

Get a pack of cards and learn some fake shuffles (via YT) then memorize the 673 King Street trick.

ETA a much better performance.

Get a notepad and pen and learn to draw

Buy books? 20 hours man, I could burn through at least two.

you can't kill an idea

You could watch The Terminal 9 times back to back, and have just enough time left to be disappointed by some overpriced meal at the Wolfgang Puck.

I wouldn't get wasted, if you're in your 30s that can give your worst headache ever. If the wifi is good enough, maybe start a series? Possibly something with short episodes, a well-selected anime will easily kill something like 10 hours. And if possible, try to get as much sleep as possible

I would say get a hotel room, but it has uh, been 6 hours since you posted this so…

I know you mentioned audiobooks but what about some digital books? Personally, reading makes my eyes tired so I know that, for me, reading something would be a good way to provoke a nap.

As a response to the idea that you may get fatigued by passive media, a book may be a good balance to that. With movies, shows, and audiobooks, you're going to be listening the whole time. It's just constant noise. A book may be more meditative.

Which reminds me, this may be a good time to practice meditation.

No advice, but I sympathize. I once sat listening to music while waiting for my flight to board. When there was no activity and fewer passengers in the area than I expected, I discovered that while I had been waiting they changed the gate for my flight. I ended up waiting in Chicago Midway (this was before their big upgrades in the early 00s) for 12 hours. It was hell.

Twist your thumbs

There are very good mobile games without subscriptions, virtual coins, loot boxes and shit. Some examples on iOS:

• Sawblades
• Ollies Arcade
• Knotwords
• High Rise

It may sound stupid, but try learning some card tricks or play solitaire with some playing cards?

Do you like Roguelikes? Slay the Spire is really good and it's on Mobile.
It's a port from PC, so no microtransactions or garbage like that, one purchase and done.
There's also Mindustry. It's a mix between Tower Defense and Factory game. This one also has no MTX since it is a Open Source game. Free on Android, 2 Bucks on iOS.

Try Monument Valley it's a one time pay puzzle game that moves like an MC Escher sketch.

Unsure of your preferences with games, but Shattered Pixel Dungeon is free, offline, no ads, and the only purchases are for aesthetics to support the app. It's an 8-bit rogue like, and never the same game twice.

It's not gonna last you 20 hours, but last I checked the official Sonic 1, 2 and CD ports are all free on mobile (and they're really good).

As for android games, if you're into tower defense, give infinitode a try :)

If its your thing try kearning a language on Duolingo or something like that

Play some chess on chess.com

Vampire survivors and random lore vids.

Have a 2 hour phone chat (with spouse?)

Buy a note book and write a diary to remind yourself of everything that has happened in the last year.

The Lahey link made me laugh way to hard, I've been sick as fuck the last 2 days and I'm laying on the couch watching trailer Park boys with a decent buzz so it's fitting.