Funeral

at funerals or memorials I don't know what to do with my hands. Once before I went to a memorial I'd gotten a cup of coffee and at least while I was holding onto said coffee cup I'd had something to do with my hands. Once I'd drink it I again was like "what do I do now?" Do i put my hands in my sweater pocket? On my legs and pat my legs (I was in a dress so no pockets visible). Many people are already uncomfortable at things like that so I'm not alone in wondering what to do or not