I do strength exercises with body weight, chairs and using a yoga mat.
Things like knuckle press ups, holding handstand against the wall and triceps extensions using a chair.
With the chair also use for upright row exercise for 50 reps.
For abs do V-Ups
For legs, chinese type squats, one legged balancing and push up into a bridge like position, about three sets of each with 26 reps.
I weigh about 15.5 stone.
On weekdays also run up six flights of stairs very morning.
Friends that used to know me in my 20s think I am pumping weights again.
Saves a bit of money and no waiting, can do this at my one pace.