I’m not CT but since lockdown made me work with what I had I thought I’d share a few of my alternative exercises.
I’ve found Landmine belt squats are a decent option.
What I did for these was to hold on to a barbell in a corner /landmine while in a deep squat position, but (me) a bit angled forward. Kind of like a in the bottom position of a lumberjack squat.
The barbell served two purposes: loading and balance.
Have you tried MINI bands? For leg curls at least they weren’t bad, even though I prefer to use an exercise ball.
Well, you can do it by yourself by having safety pins in the bottom. Lower the overloaded bar to the pins. Get out from under the bar, remove some weight, get back under the bar and lift it back up. Add the extra weight again, lower it back down…
Singles are not bad, but doing sets like this is super annoying.