I absolutely love hacking ikea furniture, specifically their kitchen cabinets. If you need a bunch of boxes as the base for a project and you’re thinking about building it the traditional way, ie 3/4 birch plywood, I can almost guarantee you that the cost of raw materials alone is going to be more than picking up an similar sized kitchen cabinet from ikea. Yes it’s mdf but in my experience they are super durable and it has never been an issue. Writing this from atop my hacked ikea storage bed :-)