You see the stepping board under the door in the picture above? That's not just for show. I have to grab hold of the steering wheel and boost myself up into the seat of the big-rig. I called that my "pull-ups". Then there's my usual stop at Lowe's or Home Depot for gardening supplies. That bag of Citrus fertilizer weighs 20 pounds!!! I do 8 reps with that: (1) lift it from the shelf (2) place in cart (3) pick up from cart put on counter (4) put back in cart (5) out of cart into back of truck...well, you get the picture.
Then there's my free weights...er...edging stones to build the planting beds, about 15 pounds a piece. Try picking up and putting down 10 of them about 10 times for each one.
Add the plants to put in the ground. These are my deep knee bends, squats, etc. Digging the hole really builds the muscle on the biceps too. Altogether a great fitness plan.