A kettlebell on the hip crease is a simple way to progress glute bridges when a barbell is not available. Pad the bell or use a folded towel if needed.

Diagrams show the shape of the movement. Follow the written steps before you add load.
Equipment. Kettlebell, Bench
Muscles. gluteus maximus. Also hamstrings, core
All Cheeked Up publishes general fitness education. It is not medical advice, physical therapy, or a promise that your body will change. Stop any exercise that causes pain and talk with a qualified professional about injuries, pregnancy, or health conditions before you train.
Equipment
A dense pad that sits between the bar and your hips. It will not make the thrust work better. It will make you willing to do another set.
About $29
Equipment
A mat for bridges, clamshells, and knees that would rather not meet the floor directly.
About $40