Costco is offering free 20$ gift certificate and a google home mini with a new student membership. Student verification is done with MyUnidays.
https://www.costco.com/join-costco-quick.html
The Costco Shop Card and Google Nest Mini included in the promotion will be mailed within 4-6 weeks after you have joined Costco as a new member using the Costco Membership Activation Certificate. Offer Expires Feb 29, 2020