Ski-coat en ski-pants (duh)

Good gloves or mittens (for skiing, as you'll want them waterproof)

Thermal underwear (long legged/sleeved; this will make you really happy)

Ski-socks (4 pairs minimum; more is better)

Warm underclothing (like turtle-necks or fleeces)

Headwear (warm, preferably something that covers your ears too)

Scarf (long and warm, for cold days)

Ski-goggles (you want these for improve contrast on overcast days, and to cover your face on cold days)

Normal sunglasses (with good UV filter; not a cheap pair)

Backpack (not for beginning boarders, as it messes up your balance)

Suncream, and after-sun-lotion (you will burn horribly if it's sunny; we're high up and snow reflects UV almost completely)

Lip-balm (to protect from sun and cold)

Knee and/or wrist-protectors (highly recommended for beginning boarders or jumpers)

Ass-protector (highly recommended for beginning boarders or jumpers)

Possibly a helmet (for jumpers and fallers; mine usually turns out to be useful once or twice a year)

Inner-gloves (for if it's REALLY cold; depends on season and altitude)

Mouth-cap (for if it's REALLY cold; depends on season and altitude)

Ski's & ski-poles or board, and boots (duh)

Solid shoes with a deep profile on the sole (for walking in snow and on ice)

Warm winter-clothes

Swimming-cloths (optional; for if you want to go to the local swimming-pool or sauna)

Towels (if you're not renting them)

Dish-drying-cloth (approximately 1 per 2 persons; often not present in the appartment)

Smoked-beef-sausages (Giel will bring the usual ridiculous amount)

Chargets for your phone/MP3-player/NDS/PSP/camera

Set of speakers per appartement with cable to connect to music-device

Pasport or ID-card (check your expiry-date!)

Pincard or creditcard (check expiry and that you can use it outside of NL)

Your travel-insurance card or papers

Photo or video-camera (+ tapes + charger + charger cable)

Cash (E.50) for your first deposit into the appartment-pot which is used for dinner and breakfast

Cash (E.?) to buy cheap cigarettes in Luxembourg

Sleeping-bag and/or pillowcase and/or sheets (unless you're renting bedlinnen)

Disguised alcohol (like wodka-orange-juice in a Fanta-bottle)

Sleeping-bag or warm coat (if you don't want to wake up freezing)

Neck-pillow (to add a little bit of comfort while sleeping)

Hooded sweater (perfect for use with a neck-pillow)

MP3 player (ideal to help fall asleep)

Sleeping-pills (really helps; Chris and Giel usually have The Good Stuff ™)

Sunglasses or sleep-mask (to not be bothered by passing streetlights while trying to sleep)

Earplugs (if you like them)

Nintendo DS (the more the better! multiplayer-gaming in the bus!)

Toilet-paper (a half one is fine, in case the toilets along the route have run out)

(e)Book

Food for the trip (don't expect a proper dinner)

Rope

Duct-tape

Sandwich-bags

Laptop (with capacity to store camera-footage if you fill your cameras)

Portable radios (4 Motorola's, a lot cheaper then using your phone)

Games (Carcassonne, Katan, Munckin)

Maybe my beamer and Wii (hopefully via someone's car)