To save time, I made a list of some of these things. I didn't add links.
This page is probably useless, unless you are actually me. Although this is pretty much a stream of
consciousness, I tried to sort items into categories:
Activities
drawing with pen & paper
soldering
walking in the middle of nowhere
talking in-depth about tech
reading a story-book
showering
designing a data-protocol that makes sense
breakfast buffet at hotel (the activity itself)
washing the car
programming
navigating with map and compass
explaining something effectively to get a point across
humming along to a song
create rather than consume
looking through microscope
constructing stuff out of acrylic sheets
saving effort by thinking a little longer
splitting a task into iterations
thinking
creating a happy situation out of nothing
making things do things they were never intended to do
sucking up screws with a vacuum-cleaner
running in a forest
lifting increasingly heavier stuff
Music
Caro Emerald - Stuck
Grauzone - Eisbaer
Nena - 99 Luftballons
chiptunes & keygen-music
psy-trance
goa-trance
Craft Spells - Idle Labor
LukHash
Architecture in Helsinki - In Case We Die
Zombie Nation - Kernkraft 400
Pretenders - Don't Get Me Wrong
The Corrs - Breathless
Primus - Jerry was a Racecar Driver
NoMode - Microcosmos
Chipzel - Spectra
Men At Work - Down Under
Members of Mayday
Ievan Polkka
Great Giana Sisters (C64) loader-music
C64 Turrican music
Super Hexagon music
Cranberries - Ode to My Family
any fast polka
Anamanaguchi
Slime Girls - Warpstar and most other songs
M4SONIC - Launchpad User 1 Solo
The Doubleclicks - Nothing to Prove
Lazerhawk - Redline
Acda en de Munnik - Het Regent Zonnestralen
Lynn Marie - That's What I Like About the North
a lot of stuff on Bandcamp.com
The Kinks - You Really Got Me
FM Attack
Fairground Attraction - Perfect
Belly - Super-Connected
Madness - One Step Beyond
Throwing Muses - Not Too Soon
Echobelly - Four Letter Word
Carly Rae Jepsen - Call Me Maybe
Deee-Lite - Groove Is In The Heart
Tanya Donnely - The Bright Light
Red Zebra - I Can't Live in a Living Room
Joy Division - Disorder
The Firm - Star Trekkin'
Cindy Lauper - Girls Just Want To Have Fun (thx Jan)
The Orb - Little Fluffy Clouds
Avril Lavigne - Sk8er Boi
Kenickie - In Your Car
The Breeders - Divine Hammer
Pixies - Debaser
Bran Van 3000 - Everywhere
Happy Working Song
M0t0rhead - Ace Of Spades
Ministry - Jesus Built My Hotrod
Minor Threat - Straight Edge
Joy Gruttmann - Das Kleine Krokodil
Speed Metal Hell - Divine Oppression
Cake - Stickshifts and Safetybelts
Radiohead - Fake Plastic Trees
Sparklehorse - Spirit Ditch
Black Flag - Six Pack
Bluemchen - Herz an Herz
Hormonia - Kevin
Beckers - Switch (and various remixes)
Midimiliz - 10000 Watts
Sonic Youth - The Diamond Sea
Miss Kittin & The Hacker - Frank Sinatra (First Album 2009 reissue version)
Shakespears Sister - Stay
Kate Bush - Cloudbusting
Robert Parker - '85 Again
The Tokens / Tight Fit - The Lion Sleeps Tonight
The Beatles - Here Comes the Sun
The Cure - Boys Don't Cry
The Killers - Mr. Brightside
Bettie Serveert - Palomine
Weird Al Yankovic - Polka Your Eyes Out
Purple Disco Machine, Sophie and the Giants - Hypnotized
Black Sabbath - Paranoid
The Cure - Disintegration
Wild Nothing - Gemini
Merol - Gemengde Signalen
Florence + The Machine - Free
PJ Harvey - Kamikaze
Sisters of Mercy - Temple of Love
Dire Straits - Sultans of Swing
Trafassi - Wasmasjien
Hydrogen Sea - These Days
The Smiths - This Charming Man
A Flock Of Seagulls - Space Age Love Song
Roosbeef - Mandola
Johnny Cash - I've Been Everywhere
Eefje de Visser - Jong
Aphex Twin - Heliosphan
Curtis Mayfield - Move On Up
Urbanus - Hottentotten
Global Kryner - Something Stupid
Nature and surroundings
abandoned railroad
field of heather and gold/brown long grass
field of green grass next to forest
old factory / industrial area
flyover
colourful graffiti
cars with big decorative unexpected stickers
layers of trees when viewed through rain
sunrise
sunset
yellow ray-petaled flowers
rain
running sheep
weird underwater plants and animals
fog
fractal-like plants
octopuses
insects
nudibranch colours
hyperactive border collie
relaxing black/white cows in lightgreen meadow surrounded by trees
extremely small dog at Awesome Space
sky with weird clouds
Games
Gravitar
Set
Super Stardust '96
Kobo Deluxe
anything asteroids-like
anything fancy breakout-like
top-down race games
Space Invaders
Oil's Well
Frogger
Food/drink
fries
lemon/lime
noodles
green tea
fried rice
chili
strawberry
kiwi
pesto with French bread
espresso
tomato
icecubes
pickles
banana
olives
Tech
meta-programming
home-computer
bits
realtime stuff
cellular automaton
Miscellaneous
green
orange
yellow & green
black & yellow
yellow & white
white noise
water
cat
guinea pig
underground mine
gravity
other planets
creativity / out-of-the-box thinking
cool weather
colourful shower curtains
Wikipedia
people smiling without apparent external stimulus
simplicity
self-explanatory things
surreal animated movies
people being passionate about something
insane humour (definition pending)
tossing away the envelope after reading the letter
projection-mapping art
letting seatbelt retract-spring smash belt buckle against car door frame
the word "voordeelmuis" (discount-mouse)
parkour-videos
buggy jumping in Moon Patrol arcade-game
Bottom (TV-series)
YT-video "Earth: Our Hauntingly Beautiful Spinning Home in the Cosmos" by Thunderf00t
dog-sized horse
lama
orange & grey
red candles
pink & light green
science
single-celled everything
launchpad videos
visual fireworks
minimal effort, maximum effect
messages on Albert Heijn teabag-labels
unplugged life
nature-documentaries
fractal-animations
the name 'Konino' (online pet-store)
Super Hexagon + soundtrack play-through video
Soundodger+ / Tokyo Skies play-through video
the universe
some not totally artificial puzzles
Margo saying "What about the air?" in movie "Despicable Me"