I will be going on vacation and I have a 12 hour layover in Newark, NJ. I will be getting a day room at one of the airport hotels. My grandparents are buried in a cemetery right next to EWR airport. I want to go visit their grave site and clean up their headstone. I need some recommendations to what product i can use that will fit into my suitcase and be under 4oz per TSA. I’m thinking vinegar and some toothbrushes. What other cleaning products would you use? Thanks.