Things to do in Chennai?

So i have a couple of friends coming over to chennai this week and me being the “dude from chennai” am completely clueless on what are the things to do and where to take them. We’re also on a budget so any pocket friendly suggestions would be immensely appreciated. Any cafes or restobars wtv y’all think is really good pls do suggest

PS: They’ve said no to Laser Tag and Trampo Parks :(