Make room on your bench for the Preppin' Weapon. These colorful tools are well thought out weapons against grumpy sanding experiences. Way more ergonomic than a block of wood with a nail in it, and arguably better looking, their key charm is the ability to clamp down on your sandpaper in a simple comfortable package. They feature a high-impact ABS plastic body, a tough padded bottom for extra traction, and locking grippers on either end to keep your sandpaper exactly where you want it. Despite (or possibly because of) their jovial name, these things beat the tar out of other sanding options we've used.
Fits a quarter sheet of paper perfectly, and the stainless clamping levers are easy to operate even with tired hands. For those who do auto stuff or work with wet sanding, the body floats so you can dunk it without having to fish for it later. The body is also tapered to get at tighter spots. You can even layer several sheets deep and tear off the outer layer as it gets tired.
Bonus round: they are made in the USA, come in four cheerful colors (pick a color for each grit you use), and have been called the "Cadillac of sanding blocks." Really. Don't you deserve the best? Available now at Hand-Eye Supply.