Blow up air mattress (Brooklyn)

Hi I am in desperate need of a blow-up air mattress if you have a twin they'll be good if you have a king that'll be good or clean it really doesn't matter my fiance might be moving in with me and we can't afford a mattress now but we can put a blow up mattress if we could get it for free I would appreciate it if anybody else there would have one I have a pump so I don't need a pump so if anybody has one that'll be a really good thank you so much