Bubble levels have been the standard for a very long time, but laser levels are getting cheaper and easier to use all the time, like this one from Ryobi.

Have a big project ahead of you? Don't forget your laser level, like the DeWalt 20v Max Laser Level kit, available at its lowest price ever offered on Amazon, over $500 off.

A laser level can be an invaluable tool for keeping things straight, but which color laser level you use may be more important than you realize.