Our Church has a Scrip fundraiser. How it works: you buy gift cards through the program and the Church gets a rebate. (So if you buy a $100 card that offers a 4% rebate, the church gets $4). Money received goes to the Building Fund.
You can order cards through the Church (forms can be found on the table in the Narthex next to the Record of Fellowship stand). The easiest way, however, is to create an online account at raiseright.com
(use enrollment code C4E4511D63916) or download their app.
Many companies offer physical or e-cards. Some physical cards (such as Pick n'Save) are reloadable, so you can keep using the same card but still earn money for Church by reloading it on the app or online account.