I love a good foot warmup! The song I used for this one is quite long, so you could absolutely add a series of relevés, cambrés, or pliés afterward.
1: Tendu front
2: articulate the foot to flex
4:close in 5th
5-6: wrap the foot and bring it up to sur le coups de pied
7: bring the foot back down to 5th
8: demi plié
repeat to the side and back, then,
1: tendu side
2: plié in 2nd
3-4: relevé and balance
5: plié in 2nd
6: tendu with the other foot
repeat with the opposite foot.
Note - check out this IGTV clip on pas de cheval and sur le coups de pied.