ohh, i've received bottled honey before, from goodwoodpark hotel... not heard of olive oil before, tt is interesting! customized candies are getting popular now.. is nice! i like it!
i agree luggage tags are useful, but considering i've been to so many weddings, too many luggage tags cannot be used! i think a good gift would be something that can be used even if you have multiple (do consider guests who attend more than 1 wedding a year!)
another thing to remember is that.. although it's your wedding, you might not want to get a favor that would have your face imprinted in every corner of the product, coz then noone can use it, really. i wouldn't really want to use a coaster that has my friend's face on it. not use a luggage tag that has my friend's name engraved! some things are ok with faces / names, but not other stuff..