This pocket calculator is desgined to fit in any pocket, and to be operated using one hand only, thanks to its small size and special shape:

Available from solutions.com.

Is this the less practical electir stapler ever ? If you use the USB hub it contains, probably. Note that the stapler part requires separate batteries. Doh!

Available from gadgetsquick.

Destroy confidential documents without a shredder, thanks to the five blades of the paper shredder scissors.

From stupid.com.

Leave manually written notes looking like e-mails to you colleagues. Use the CC and BCC fields with care, they could cost you a lot of time.

From thinkgeek.com.

Look at this picture. Does it seem familiar ? Both the Mac OS and Windows calculators are now available for real:

From coolest-gadgets.com.