The DIY Odd Object that can be used for a variety of different exercises from Atlas Stones to squats. This is a great variation to add in to your training aside from traditional barbell and dumbbell training.
Create your own rower from home for under $120! This is a great way to add in some conditioning to your workouts, but not breaking the bank at the same time.
The Concept2 Rower from PRx Performance can perform for more reasons than just...rowing. Check out additional movements you can do straight off of your Concept2 Rower!