Smajdalf: You may use several resistors in parallel to get more power dissipation. It won't be nice but it is usable to get it working ASAP.
i see - so, to calculate Ohm's Law - i'd then divide the effective current (for the wattage) by the number of resistors in parallel ? (not forgetting that resistors in parallel also drop the total resistance)
PerryBebbington: Collect wall worts. Any electronic equipment being thrown away keep the wall wort. ...
yep, that's what i've been doing - 5V, 9V but just the one 12V. and they are all under 1000mA! (i have 500mA, 600mA and 900mA !!)
i should repurpose an old USB cable - i have a phone charger (1000mA) that has a USB socket.