I have some equipment and I belong to a gym, but often I do exercises that don't require much, even when I'm at the gym I drop down and do planks, push-ups, sit-ups, yoga poses, stretches, etc etc. And when it comes to weights I own a pair of 1.5, 3, 5 and 10 pounds. I use them pretty much every morning, I just use them longer for more sets and sometimes I use them together (the 1.5 are wrist weights). I was thinking about getting a kettle ball, but it was like $50
! I might as well put a strap around the youngest DD and use her instead, she's a little heavier even and a live load to boot, plus she loves to be tossed in the air. I also own a body ball, it's a pain to store, but is a surprisingly good workout and only cost about $20.