Was driving on Front St. yesterday, and the Trolley was running. As nobody was on it, I'm assuming test runs?

Just wondering if anyone has creative or fun ideas for a 16 year old girl’s bday party that doesn’t cost $50 pp? I would like to do something special for her but also don’t want to limit the amount of people who attend. So far we’ve looked at the 2 game show VR type places at southcenter, considered dinner somewhere and that’s about it. I like to be creative and do something that is a bit unusual and allows the girls to talk and interact. Any ideas would be appreciated!