you can get a cheap backpacking tent on Amazon for 30 bucks
Hey, I just bought a very cheap tent to use until I have the money to get myself something nice. its extremely small and lightweight and very cheap($38) its a yodo 2 person tent. Even though its very cheap the material is pretty ok for general usage, nothing crazy I also have my own ground tarp and top cover tarp so it being waterproof isnt a big concern for me. Here's the link from amazon.