I picked up this one on craigslist, Northern Light Technology Boxelite, Light Therapy Box. The effect is enough that I bought a smaller Verilux touch model for work, but it's a third of the size (but much slimmer so it'll fit on my desk in the office). Haven't remembered to bring the smaller one to work, but I'd imagine I'd need more time in front of it.

The big one I have is the 4th one on this page. https://nymag.com/strategist/article/best-sad-lamps.html