For most of these codes, you have to be a first-time user for the referral codes to work. If it is your first time, however, I would appreciate greatly if you use these!
Rakuten Ebates – Get some cash back when you shop!
Code: https://go.ebat.es/SKWINT14?eeid=44749 (Get $10 to start if you sign up!)
Ibotta – Another cash back app
Code: https://ibotta.com/r/ylhvkff (First-time users get $10 to start!)
GrubHub – Food delivery app
Code: https://www.grubhub.com/referral/c12eeefa-487f-11e4-9697-9cb654858910 (First-time users get $10 off their first order!)