Share a useful piece of information

Sound vague enough for you? Therein lies the ease and versatility of this assignment. Chances are you've got loads of productivity tips and time-saving tricks up your sleeve, which someone else would benefit from knowing as well. For instance: baking soda can be mixed with cornstarch to make a deodorant, chromeadblock.com is a free tool that prevents ads from appearing on the websites you visit, and crowdsurfing can be nipped in the bud with a single poster (see right). Customize this tip to the person you give it to for maximum impact.

Effort involved: a little racking of the brain, which never hurt anyone.