There's no denying it, Mr. Sketch Markers are just plain fun to use!
Each marker smells like either a fruit or spice. They're pretty easy to get your hands on, too. Most office supply stores carry them, as well as places like Walmart or Target. And they're a lot less expensive than fancy art markers.
They have a chisel tip that lets you draw thin or think lines, depending on how you hold the marker. Bold lines are great because people can see them from across the room. Thin lines are great, too, because they let you add some details for people to see when they're closer.
Back to the bold lines for a minute...
Working with big, bold lines is a great habit to get into. Whether you're working alone or with a group, bold lines make it much easier to see things. If you're planning to send pictures of any sketches electronically, bold lines will actually let people see what you've drawn. And that's the whole point, right?