You can get creative with what you use to elevate your foot. As long as it is a flat elevated surface and is stable, meaning it will not move, it can work.
Muscles of your butt.
Front portion of your shoulder.
Muscles spanning the back of your thigh.
Inner portion of your bicep.
A group of muscles on the inside of your lower arm.
Center region of your back, spanning from the pelvis to just below the neck. However, parts of it are hidden beneath other muscles. The lower portion is the most visible.
Outer portion of your bicep.
A group of muscles on the outside and sides of your lower arm.
Muscles spanning the front of your thigh.
Smallest portion of your chest, spanning from your clavicle to your shoulder. It takes up a very small area of your chest and is multiple times smaller than your sternal head.
Dumbbells
When gripping dumbbells, make sure you position your hands in the middle of the bar and not at the end next to the plates.
Steps
If unavailable this can be substituted for a household item such as a large textbook, provided that it is sturdy and can support your bodyweight without sliding on the floor.
Exercises that target the same primary muscle groups and require the same equipment.
Exercises that target the same primary muscle groups with different equipment