Aha - a useful tip from Don for those who use crib-sheets at singarounds - keep them in "ring binders (alphabetized.)" That makes searching time much shorter, and it makes it easy to remove the songs that you have memorised. (I was once asked if my fat folder contained all the songs I know - my answer was "No, it contains a few of the songs I like but don't know.")
And, in these days of cheap computers and cheap printers, have the songs typed in a large enough size to read comfortably at a glance. (I prefer 14pt Verdana.)
If that makes the song too big to fit on 2 A4 sheets, then cut out verses until it does fit.