And if it is still not quite practical to have our walls light up, at least art should light your life (literally).
Warning - this is a very bright lamp at eye level and will not be suitable for all locations.
LED driver - AC/DC voltage converter Waterproof 670mA 36W Power Constant Current Source (85~265V)
USD$ 11.79 . qty 1, source Dealextreme
2 watt lumen leds - (any bright white led will work). 2W 160-180LM 2850~3050K Warm White LED Light Bulbs (20-Piece Pack)
USD$ 7.67 (only used 13) source Dealextreme
star boards - Hexangular PCB Boards for 1W/3W/5W LED Emitter (100-Piece)
USD$ 6.94 (only used 13) source Dealextreme
Framed art $4.99 - source Goodwill
others - Solder, wire, chipquick solder paste (amazon), Gila window film (home depot), power cord with built-in switch (home depot),20" x 20" sheet aluminum (home depot)
Step 1: Step 1 - "wave soldering in an electric skillet " - attach leds to star pcb boards
Insure a good thermal bond between the LEDs and the star pcbs. DJJules' instructions are great. If you have never tried wave soldering in a skillet you should. A little chipquick on each contact point and a little heat and the batch is completed.
Step 2: Step 2 - solder and epoxy to aluminum plate (heat sink)
(In a pinch I have even mixed JB weld epoxy with silver solder paste as a thermal epoxy- caveat emptor).
Step 3: Step 3 - Cut the lamp outline - add shade/diffuser
Tape on diffuser (4 layers of Gila window covering) over lamp outline