While waiting for my other darkroom equipment to arrive, I wanted to digitize the negatives. I ended up using my enlarger without the lens as a negative holder + light table. Luckily you can turn it sideways, as if to project the photo on a wall. I used an M42 bellows with a 50mm Takumar at the smallest extension (2-3 cm). This gave me a comfortable working distance of about 15 cm, and the negative almost completely filled the frame. The enlarger has quite strong light, so you can easily shoot at f8.
The resulting photo is grainy, but I quite like the effect!