RigWheels are some clever new items targeting the DIY audience. Although they run a bit high in price for most, the ability to quickly and easily move them from one project to another makes them quite appealing. You can literally mount them with a single bolt, and a clamp knob or wing nut.
Check out the video above for just a few ideas of what you can do with a set of smooth mini rollers, and the video below which takes you through an entire DIY project crafting a full track tripod dolly. Beats drilling angle iron, that's for sure.