Actually all you have to do to lure Tim back is leave brownie crumbs laying about. But I'll play your game. I'm still waiting on my legume poem, though. (See my ultra-creative response in your Feynman thread for more information.)

Sheldon: Hot cider, a cinnamon stick and um... That's enough for him. He promised his mother he wouldn't do drugs.

Leonard: A milk-free mudslide. And before anyone says "They don't contain milk anyway" I found a reputable article that stated that a "Mudslide #4" does contain milk.

Howie: A martini with LeSueur peas substituted for olives.

Raj: Hmmm...doesn't matter as long as it has a cute umbrella

Penny: Vodka, Rum, Gin, Tequila, um...what other kinds of alcohol are there...um...whiskey....and a cherry on top

Bernie: Any short drink will do

Amy: Sheesh this show has a lot of characters. Hmmm... actually, she just wants you to write me a legume poem.

But doesn't Sheldon only accept hot cider when he's horribly outraged or something?

@Lemons said:

Penny: Vodka, Rum, Gin, Tequila, um...what other kinds of alcohol are there...um...whiskey....and a cherry on top

Penny also likes Schnapps and red wine when she is playing Twister. But not schnapps and Red wine mixed together.
She only drinks that after she has drunk enough schnapps and red wine.

@Knixon said:

But doesn't Sheldon only accept hot cider when he's horribly outraged or something?

He was horribly outraged in my scenario. That was implied.