I stole this from 3D but it’s always a good workout.

Uno

Blue – Merkins / Curls
Green – LBC
Yellow – Squats / Goblet Squats
Red – lunges / Chest press

Skip – Run
+2 – pick 2 exercises, 2 reps
+4 – 4 reps all 4 exercise
Reverse – Repeat last exercise
Wild – Change color