@rachelsea53 My sister's MIL gave out koozies as the favor at the rehearsal dinner. Lots of people will advise you against giving out favors that are wedding related household items - like with the bride and groom's name on it, wedding date, etc. However...FI and I do use our koozies. Especially when we're hosting a party and need koozies for everyone...so they do come in handy.
Most people will say an edible favor is always the most appreciated because you aren't asking your guests to lug an unnecessary or potenntially useless item back to their home. We're doing gourmet cookies for our favors.