Ideas to surprise SO with baby announcement

My husband works upstate and is coming down for his weekend visit. I got my BFP on Monday and haven't told him yet because I've been trying to find a cute/creative way to tell him. We have a 3 yo son and I was thinking about just having him put on a shirt that says "Big Brother" and wait to see when he catches it, any other ideas girls? How did you tell your SO? 😊😊