Buy 5-10 different kinds of chocolate candy bars and a package of baby diapers. Number the diapers and place about a third or half of each candy bar in the diaper. Be sure to unwrap it first and write down which candy bar corresponds to which diaper number. Then put them one or two at a time into the microwave. Try microwaving them for 30 seconds to begin with and increase or decrease the time, if needed. Be sure to watch them to make sure everything is going all right. You can smash them up with a fork a bit to make them seem more real. Have worksheets prepared for the guests with the names of the candy bars you used and a blank space for them to write which number diaper they think corresponds to each candy. Pass the diapers around and let the guests sniff or touch (no tasting please!) the mess in the diapers. They then guess which candy bar is in that diaper and write it down on their worksheet. At the end, the guest with the most correct answers is the winner. Part of the prize for this game could include one of each of the candy bars used. Be sure to have a camera on hand to catch some hilarious pictures of diaper-sniffing!