It used to be that every year I had this huge fear that I would receive an unexpected present from someone with whom I had not planned to exchange. Now I simply keep some $10 gifts on hand should this occur. I keep them wrapped in generic paper--suitable for Chanukah or Christmas. I like Starbuck's gift cards, scented candles, or body lotion. It seems to save me at least once each year. Might be worth a thought if you also occasionally have that fear near the holidays. One less thing to worry about, at a time of year when it is always seeming like there are plenty of worries!