Booty workout

The most convenient booty workout is obviously squats. You can do it anywhere and you don't need any equipment. But, you need to do a lot of reps regularly to have some results (you can start with 15 squats per day, then increase the reps by 10 per week for 1-2 months for example).

You can also climb stairs daily to work on your glutes. Even tho it mostly focuses on legs, walking stairs overall is a great exercice for the body, so you should give it a shot!