Climbing Fingerboard
There are only a handful of items I would consider a must-have for rock climbing. Since the sport is largely based on strength relative to your own body weight, it really isn’t necessary to lift weights or buy a lot of work out equipment.
One thing I do consider a must-have is a climbing fingerboard. They are relatively cheap compared to a weight set or an exercise machine at only about $45 and the physical and technical benefits are priceless. As you may already know from your experience climbing, the only way to actually get better at rock climbing is to actually rock climb. The rest of the body weight exercises and physical training will help keep you strong but where they are all severely lacking is in their ability to both train and strengthen you tendons. A climbing fingerboard will do both of these things and increase your physical strength and condition at the same time.
As you can see in the image above, a climbing fingerboard is made of synthetic rock material similar to rock climbing holds found in rock gyms and has almost every style and size rock hold imaginable. Since you are all busy people and can’t make it to the rock gym every single day of your lives but still want to get super strong, this is the perfect solution. It’s only about 30 lbs which makes it super easy to install and you can use it for just 10 minutes a day to increase tendon strength and condition your core for climbing on real rocks.

There are also some really good workout routines online for using this fingerboard.