Much like weed or tobacco, crack is typically smoked by applying a flame directly to the rock and then inhaling. Steel wool, or a few screens is needed to keep the melting rock from 'running away' before it is completely vaporized. You can use a simple straight glass tube (preferred by crackheads), glass pipes or even glass bongs that could also be used for weed or tobacco.
Meth is typically smoked by melting the rock with indirect heat and inhaling the smoke created by the melting process. Crystal meth, the preferred medium for smoking, come in rocks as well and look like big pieces of salt.
This is a meth pipe. 4'' Thick Incense Burners - 20 pieces| AAA Glass Pipes
Put the crystal in the bowl, heat from the bottom, and when smoke appears, inhale. A simple cigarette lighter can be used for meth. Crack is better with a stronger flame, such as a small torch lighter or a q-tip dipped in rubbing alcohol or high-proof liquor, such as 151 rum.
Purveyors of meth pipes, like the one in the link, often call them 'incense burners' to get around drug paraphernalia laws. While one could easily smoke tobacco out of a crack pipe, especially one that isn't just a straight glass tube, it would be difficult to argue that one can smoke tobacco out of a meth pipe.
Of course, a seasoned drug addict could smoke their drug of choice out of just about anything with just about anything. Tinfoil and matches? No problem. But it always drives me nuts in the movies when actors smoke crack like it's meth.