Here in the UK, we have a comic / magazine called Viz which includes a 'readers tips' page. Here are some extracts:
Save energy by placing solar powered calculators unders a hat when not in use
Always carry a tin of white paint and a paint brush in the boot of your car. If your chosen car park is full, simply paint an additional parking space for yourself.
Cigarettes are a much cheaper and more widely available alternative to nicotine patches.
Anyone else have any tips they's like to share ?