The following are the 10 best gravity bongs:
1. Pulsar Meditation Gravity Bong
3. The Knockout Beer Bong & Gravity Bong Hybrid
4. The Bukket Pipe – Waterless Gravity Bong
5. High Rise Glass Gravity Bong
9. Wiz Khalifa’s Taylor Gang x Stündenglass Gravity Pipe
10. Dr. Greenthumb’s x Stündenglass Gravity Pipe