A Weightlifting Bar
Because you can use this one piece of equipment in a number of CrossFit exercises, it is definitely worth the expense. Just make sure you get one that is sturdy enough to sustain the weights you will be using.
Again, due to their versatility and being able to use them in quite a few different exercises, kettlebells are a CrossFit must have. Get one that fits your hands well and, if you can, buy them in varying weights so that you can switch them around based on the exercises you’re doing.
You can jump your way to fitness by getting a jump rope that will not only build your arm muscles, but get your cardiovascular system stronger than ever. If you’re experienced, go with a fast one that challenges you more.