Do you know someone who likes sudoku, crossword puzzles, word searches, other puzzle types or variations of these? If so here is a good idea that costs very little.
Binder and hole punch
You can assemble this either by stapling pages together or assembling in a binder. A lot of newspapers have weekly crosswords. If you visit your library you could copy puzzles for very cheap on their copy machine to put in here. Some free newspapers also have puzzles. Such as Milwaukee’s Shepherd Express. You could either cut these out and somehow assemble into a book or copy them out of the newspaper on a copy machine. There are also crossword puzzles of various kinds located online.