I am not ready to try the conductive tape Bob @pennsyfan suggested, but I did get the streets laid out. I stuck with my initial street width of 4" with 1/2" sidewalks. I cut Bristol board to 5-1/2" width, intending to put 1/2" strips on top for the sidewalks. Here are some photographs.
Notice in the first two photographs some gray playground equipment near the flagpole. Our older daughter 3D printed them on their new 3D printer. They didn't tell anyone about it, and she made objects for each person's interests as gifts. She is still learning, so some of mine need to be reprinted, but some good ones are the playground, baggage carts, crates, tents and small campers for the campsite, an outhouse, doghouse, etc. They are all 1:48 scale. The people didn't turn out as well. She calls them spaghetti people. There is also some fencing and Jersey barriers. I'll get a photograph of them, unpainted and setting at the end of the street.
