I'd say try some of the cheap LED panels with rheostat that you find on Amazon that go for about $30. Though the single-color sources of these cheap lights are on the green size, a 1/8 to 1/4 -Green gel should take care of the color and if you need a lower Kelvin, simply get a sheet of CTO and filter the lights.
These panels are making it faster and easier for me to copy art and small products, much more than setting up the electronic flash and getting things dialed in.