Hello knotties!
I wanted to see what you all thought. We received a gift today from UPS, but there is not a card inside. I don't need a card or anything, but there isn't a name of who sent it either. I would love to send a thank you card, but I obviously don't know who sent it. Am I out of luck with being able to send a thank you card? I feel like asking people if they sent it would be downright awkward and rude since that would imply that I expect some sort of gift. Would the only possible solution would be to see if anyone asks how I like it or something to that effect?
I know this probably seems like a minor problem, but I figured I would get opinions of those well versed in the art of wedding related etiquette.

Thanks!