It couldn't be easier to make your own light box, from items you likely have on hand already.
Homemade {Easy, Low-cost} Light Table - TinkerLab
30 Easy Yarn Crafts for Make Creative Things - Craftulate
DIY Copper Pipe Icosahedron Light Fixture
Artograph LightTracer® 2 Light Box
DIY Light Table Tutorial And Next Comes L - Hyperlexia Resources
Anyone else trace your sewing patterns to reuse the pattern for other styles and fits? : r/sewing
Two Hour Project: Artist's Light Box
Making Tracing Light Box in Seconds, Using Flashlight
Using Tracing Projector App to Decorate Sugar Cookies - Windy City Baker
Inexpensive DIY LED Lightbox for Tracing : 9 Steps (with Pictures) - Instructables