girl's night and house warming party

I'm having a housewarming party and a girl's night combo. While my mom is excited for this she wants me to buy for it. i don't even know what i'll get for that. my friends like things and my friends will get me stuff and i'm sure when i have a party in the summer and i'm sure my friends will be bringing things. it'll be fun. my friends wanna see my place since i'm living solo.