Undervolt your light bulbs just a little bit (add a piece of iron or steel cable to the copper wire) and they last a lot longer. The plural of anecdote is not data, but I do this with light bulbs in my home, which are mostly CFLs except for the LED in my little lab (haven't bought any in two years) and projector bulbs (lasted four years).

http://robots-everywhere.com/re_wiki/index.php?n=Main.Projec... Obviously, don't use the capacitor for light bulbs connected to AC!