I decided to get into a bit more detail about what I do for strength cross-training to support my running, so I made this graphic showing my 30 minute total body workout (using weights):
This is pretty typical of the type of workout I would do using weights. Essentially I combine an upper and a lower body move and alternate between the two for a fifteen-minute countdown. I keep track of all the rounds as well as any additional reps squeezed in at the end. Then I switch to a different upper and lower body move and repeat.