I can't believe this is the only picture I have of any of these candles! (Ignore the cracks! My sister's cat decided she was mad at me and knocked over everything on the table, effectively ruining this candle.)
This was my go-to gift last Christmas. Basically, I tooka picture that's near to someone's heart (or that I stole off of facebook), edit it a bit, then stick it on a candle. It's so simple, and everyone who got one loved it.