Haven't stumbled on a crossword per say, but for Sudoku I've found a site that generates a PDF set per day.
http://krazydad.com/puzzles/
In the large print, it comes out nice enough to "take notes" on.
The site has a collection of other puzzles, the Anticrostics might peak your interest, since they're "crosswordish". you might want to look for PDF crosswords(and large print at that) or PDF printing crossword webpages, since the rendering is fixed by the file.
Dan <><