Lampshade printed out of clear PLA in vase mode, to replace the glass shade I stole from a cheap Aliexpress lamp to use as a cover for my 360° camera. The lamp was super-cheap but I didn’t want to throw it away. With the 3D-printed shade, it found a new life as a small table lamp in my office at work.
My Christmas gift to family members last year were 3D printed lamps. I got a super cheap paper lantern style lamp from Ikea and removed the socket and cord, then printed a new base (filled with sand for weight), and printed a shade using a lithopane generator to have photos shine through. I was quite happy with the results.