Pushups, ( close hand and wide) pullups, chin ups, planks, reverse dips, ( use a chair or a coffee table) squats using whatever you can hold on each hand for added weight. Go to your local high school and sprint the bleachers, your legs will get on fire, Leg raises, even body flexing and holding poses will help. Weather permitting, you can go to a local park and use the monkey bars. You'll hold onto what you have if you stay active with these movements.
Nothing changes here, it appears my home gym is even worth more than every penny I spent on it. Doubt anybody I know will ask to train here. They all know I like to left alone. No, if I just had some toilet paper......