This is going to sound really dumb but where do I get the UPS box and label. I've never shipped UPS
You can pick up a box from anywhere, they sell them at Walmart or any office supply store. Box up what you want to ship and take it to the local UPS shipping facility. Stuff like this has to go straight from them. The local place is on the opposite side of the county and they have odd, short hours each day. Call in advance.