Hidden appliance costs

An article from the Wisconsin State Journal:

The individual power drain and monthly costs of appliances can often seem miniscule, but put them together, and they can add up to more than you might think.

Appliance (the first figure is monthly cost; the second is yearly cost):
Laptop Computer* $0.22; $2.67
Old desktop computer $1.51; $18.13
New desktop computer $0.07; $0.89
Stereo $0.13; $1.56
Television $0.25; $3.00
DVD player $0.13; $1.56
VCR $0.17; $2.00
Electric toothbrush and charger* $0.12; $1.45
Mini vacuum and charger* $0.41; $4.90
Printer $0.26; $3.12
Treadmill $0.57; $6.90
Total $3.85; $46.17

* Tested with battery at full charge

SOURCE: Field testing using the Watt's Up? energy meter. Cost was calculated using a rate of $0.127 per kwh, MGE's average rate.