Parallettes, sometimes also called push-up bars, are a compact version of parallel bars that you can use for more advanced upper body, gymnastic-like exercises in the comfort of your home. Here are some DIY options for parallettes that fit a different range of budgets.
Not only are parallettes a tool for you to build upper body strength without weights, they are easier on your hands and wrists (compared to the ground) and let you practise exercises that might be too difficult to do, such as an unassisted push-up. GMB Fitness gives a few options for making your own, but if you're just starting with parallettes, the first option, made out of PVC pipe, would do fine. It's simple, sturdy and, best of all, affordable.
To start, you need about 4m of 2.5-3cm PVC pipe, four T-joints, four elbow joints and eight end caps. You also need ways to cut the PVC and glue the pieces together. In the article linked below, you are given a range of measurements to create parallettes at the height you want (the lower it is, the harder the exercises are).
By the end, you have parallettes that are comfortable to grip and strong enough to support your weight. The last thing you want is your parallettes slipping out from under you while you're doing an elevated push-up or an L-sit ab exercise. Be sure that you've assembled it securely before going wild on it.