1. Timbuk2 at Bike to Work Day: They started off making bags for bike messengers, so the folks at Timbuk2 are encouraging of anyone who hops on a two-wheeler this Bike to Work Day. On your way home, stop at their refueling station at Mission Playground, and they'll give you a guided assist to their headquarters a few blocks away. At HQ, they'll be dishing out free beer and snacks, repairing any damaged bags, and offering $20 off a custom bag. It's enough to make you bike to work more often. (Thursday, May 13. Refueling station at Mission Playground, Valencia between 19th and 20th, 5-7 pm. Party at Timbuk2 HQ, 583 Shotwell St., 5 pm-"when you leave.")

2. Radius Oyster Happy Hour: SOMA's new cafe, committed to ultra-local cuisine, is offering a fresh happy hour: $10 nets attendees half a dozen oysters with mignonette, draft beer is $4, and a half-carafe of wine is $12. Best of all, these deals go all day on Saturday, making for an ideal lunch or pre-dinner aperitif. (Sunday-Friday, 4-7 pm, Saturday all day, at Radius, 1123 Folsom St., SOMA.)

3. All-Day Happy Hour at Ironside: If your workday is starting to wear on you, the folks at Ironside are offering booze to get you all the way from lunch until clock-out time. Starting at 11 am, they offer $1 off pints, $5 off pitchers, $1 off house glasses of wine, and $3 off house wine carafes. Bring the co-workers! (Daily, 11 am-7 pm, at Ironside, 680a 2nd St., SOMA.)

4. Half-Price Drinks at Ducca: The swanky restaurant in the Westin is reformulating their concept-- and their attitude about deals. For one precarious hour (though it includes the weekend), you can sip on fancy cocktails, wine by the glass, and beer for half-price (making the cocktails $5.50, a glass of prosecco $5.50, and so on.) If they could only extend this one a little longer, or a little later... (Daily, 4-5 pm, at Ducca, 50 3rd St., SOMA.)

5. Colibri Happy Hour: This Mexican bistro is now offering a happy hour with half-priced appetizers, $3 beers, and $5 margaritas, perfect for out-of-town guests or confirmed hooky-players. And if you follow them on Facebook, they'll often throw out deals exclusively for Facebook fans who mention they heard about them on the site. (Monday-Friday, 3:30-5:30 pm, at Colibri, 438 Geary St., Union Square.)