Look into exercise assist bands instead of those rubber bands there. The kind people use to assist them in pullups. Those things go up 230lbs of resistance. And cheap too.
I'm lucky that one of my rentals has a fitness center in the building. It isn't great, but better than nothing. A few machines and cable crossovers, dumbells up to 50.
I trained legs today. Did an hour ride on my bike along the beach, then at the fitness center I did :
4 supersets of wall squats 120 second hold followed by a 25 reps on the leg extension machine.
4 sets goblin squats 25 reps, holding two 50lb dumbbells.
4 sets of laying leg curls 15 reps
4 sets of cable deadlifts
Yesterday I worked out at home as my gf wanted to go run (and I don't like running), so I did chest and tris
Chest :
4 sets wide grip push ups 30 reps but only 30 seconds rest in between
4 sets medium grip push ups feet elevated on stool same rep/rest as above
4 sets cross body flyes with bands
6 sets of the "serratus punches" exercises (core work)
Tris
the "duck under" bench move that Jeff C on Athlean X promotes all the time. 4 sets 15 reps
4 sets band kick backs 15 reps.
Let's be honest, no one is going to get jacked off routines like this, but it is better than nothing. Also, you can excuse to play around with different rep and exercise schemes you wouldn't do otherwise. Who knows, you may find out that works better for your body type.