While booking travel or ordering in, I always use promo codes to keep costs low. Sometimes the codes work, sometimes they don’t. Below are a few referral codes that will definitely work:

Airbnb– If you want to try apartment rentals, sign up here for $35 credit on your first stay worldwide.

Caviar– Food delivery service from local restaurants across the US. Sign up here for $10 off your first two orders in San Francisco.

Chariot– If you’re in San Francisco and want to save on transportation but MUNI is too confusing, use code 635UE for a week of free bus rides.

Doughbies– Want freshly baked piping hot cookies on demand? Use code 6IIHOBCF for $10 credit.

Ebates– When booking hotels and flights, I always shop from Ebates.com to get cash back from my purchase. Sign up for cash back here. Get $10 to start!

Uber– If haven’t heard of Uber, it’s an app that allows you to request a personal car. Use code 67OBH for your first ride free. Can be used worldwide.

UberEATS– Food delivery service created by Uber for food from local restaurants across the US. Use code EATS-67OBH for $15 off your first order.