I suggest a simple setup which you can add functionality to as you go (or not):
1) A dim lightbulb mounted high, a sheet of clean glass and enlarging paper, or
2) Find a used, small, very cheap enlarger. Doesn’t have to be in particularly good shape. It’s just a somewhat easier-to-control light source (for example it is trivial to add variable contrast filters to your exposures if you have an enlarger). And a sheet of clean glass.
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