I do not have weights. When my gym closed, I looked online to buy some, and well, weights are a lot more expensive than I realized. (By my math, it would take me about two years of gym membership to build a basic set up.) So, I went to the hardware store and bought bags of concrete. 50 and 80 lbs. Cost me less than $10. Had to put them in garbage bags and wrap them in duct tape to keep the bags from tearing, but I am doing squats and deadlifts with those.
While it's not a lot of weight, compared to what I used to squat and deadlift, the shape, density and fact that its a bit loose, makes it rather challenging.