What makeup should i buy?

Haaay girls(: ok so I have a $40 gift card to neiman marcus and I'm going shopping tomorrow. Problem? I don't know what to get! I just bought ysl faux cils mascara, mac blacktrack fluidline, and nars daphne shadow yesterday. So what should I get? Ahh this is giving me a headache. so I'm thinking about getting a lancome mascara? I know I just bought a mascara lol but that one was a burgandy color and I can't wear that everyday!(: so what's ur favorite lancome mascara? I don't like hypnose drama, and I like a false lash/dramatic look, so it that helps...I like lengthening better than volume fyi. Hypnose? L'extreme? But ill still have money left over... Btw I don't want another eye shadow. So maybe a blush? Idk, please help!