https://www.coinbase.com/join/kitche_fo
This link gives you a bonus of $10 in BTC after your first transaction over $100. In addition, it gives you access to Coinbase Earn where you can collect $1-50 in FREE XLM, XTZ, BAND, COMP, ZEC, and more. I have personally collected over $200 in the past two months from completing the Earn rewards, and a new Earn campaign usually starts every couple of weeks. Two weeks ago I got ZEC, and this week I got BAND. If you save up a few Earn bonuses you can reach $100 quickly and then collect your bonus of $10 in BTC.