Bouldering

Bouldering can be done just about anywhere you climb. Most bouldering is done on big rocks that have fallen off of a cliff or were dumped by a glacier thousands of years ago.
Many sport and traditional climbers boulder without even knowing it. Before you can clip the first bolt on a sport route or get in that first piece of protection trad climbing, you are bouldering. So if a partner calls and cancels, you can always climb up the first part of your favorite route or even find a boulder and practice edging, smearing and traversing to perfect your technique.
Bouldering is also a great way to “ease into” the sometimes expensive sport of rock climbing because it only requires climbing shoes, a chalk bag and maybe even a bouldering specific crash pad. The commitment level is relatively low, because as a rule, you should only boulder as high as you don’t mind falling.