Light tables are really useful for viewing processed negatives under a magnifier, but traditional light tables were expensive and bulky. I recently found some A4 size 9"x12" LED "tracing tables" at Amazon that are a really inexpensive and useful substitute - about $25, adjustably bright, thin, and easily stored. I have two, one at home and one at the office. They work well for reviewing negatives up to 8x10 and store in a drawer.

Here's the link : https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

"LITENERGY Portable A4 Tracing LED Copy Board Light Box, Ultra-Thin Adjustable USB Power Artcraft LED Trace Light Pad for Tattoo Drawing, Streaming, Sketching, Animation, Stenciling
by LITENERGY"