Wedding favor etiquette?

[luvmycats]

I am having a very very small wedding (family only) and mostly everyone attending is a couple, except 3 siblings and one teen age kid of my cousin. Do I get favors for each individual person, or get them per couple plus ones for the individuals. I wanted to get practical favors, so couples really wouldn't need 2. For example, I am having a wine theme at my small intimate reception, and I wanted to get wine glass candles and corkscrews as favors, and most people have a corkscrew--one can come in handy if you can't find the one you already have--but who needs 2 extra ones?? Candles I figure will get used, and if they're the type who don't burn candles, they'll do something else with them or give them away later. So do I buy one candle and corkscrew per couple and individual guest, or one favor per person no matter whether they are individual or part of a couple? Mind you--these are family, too, so it's not like people will be "talking" or judging me or anything like that.
To clarify, the favors I want to get are wine-glass-candles (wine glasses with gel candle in them that looks like red wine), and corkscrews. Not wine glasses, candles, and corkscrews. But the question is not WHAT to get as favors, but do I give everyone one, or use one for couples, and of course give single guests their own?