The thumbnail lights are designed to be given out at signing events. Bill will always have some with him (though I did need to give him one at Alpena a couple years ago - Alpena is not a signing event). When Harry, Kim or Nancy go to a signing they will also usually have some. With fewer signing events last year, the decision was made to also give out thumbnails at the regional events. (There will not be a special thumbnail for the regional events, the Detroit River one should be used.)