Weight bench and dumbbell/barbell set.  (Assume "one hand dumbbell" when I say "barbell" or "weights" in post)

Failing that, a Rowing Machine but that won't really get all the muscles so you'll have muscle aches when trying to actually use your muscles when lifting or doing lawn work.   Barbells strengthen far more muscles in the movements to keep them tested and on the path, and using two dumbbells/barbells too mimic a straight bar for bench exercises, though a long bar is a good addition if you use the spin on barbell weights anyway.  

If you work with barbells your muscle aches will go away.  Fixed shoulder and back pain with barbells that all the machines in the gym didn't help though I was thought I was strong on them.

Machines help and rowing is the one that hits the most problem muscles, but if you don't pickup free weights now and again to check if you're improving, you'll be weak and have aces in the muscles not exercised and other muscles work harder to make up for it, then you get painful cramps.

I'm not a fitness type, just sharing what was shared with me via Physical Therapist.  They need to use machines that target muscles  for insurance reasons at the office (Free Weights really hit all the muscles in motions of just getting ready for the lift), but gave handouts for doing the muscles with barbells and a wink.

For cardio, walking or jogging or a rowing machine on alternate days from free weights.

Not a machine.

Barbell/Dumbbell set where you can spin on weight plates from 2½ to 25 lbs per plate and DIY dumbbells instead of wasting a crapload of money on pairs of dumbbells in increments from 5 to 50+ lb kettlebells.    Get the dumbbells with the same ACME Thread mounting knob as straight bars with the "Star" type nuts to lock them down on a universal shaft size and you can customize your weight with 2.5-5/10/15/20/25 lb plates to walk your intensity of workout up as you go instead of buying another nice set of vinyl covered dumbbells.  Once nice pair of lifting gloves makes all those vinyl coated dumbbells a bit redundant.



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And a weight bench to allow you to focus on various areas, using a "getting fit and gaining muscle with dumbbells for small space exercises" book:

The Adjustable slant is important, not just a flat bench to do standard bench press with but to let you work legs, arms slants deltoids, etc all by laying in a different way:


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The above will get you far more balanced in strength than a room full of "Safe" weight/resistance machines.   Dumbbells are entirely safe if you know your limits and aren't' a klutz.  It's a harder way to go since you need to adjust bench between workouts but that's quick and easy and the same plates you're using on the bars/handles can be tossed on the leg hinge of the machine to work out Hamstrings and calves with the padded levers on the right end of image.

Then walk/jog/jump rope for cardio.   Getting fit doesn't require a 4 digit price tag to even get feet wet.  Just remember it won't help you at all if you leave it stuffed in the corner.   Make your own soft gym floor around the bench as well so dropping a plate isn't a dangerous event.



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