As the title says... I'll start with a good mattress. I just graduated college and moved to los angeles and bought a crappy mattress (The brand was literally named "ACME mattress") for $200 from a seedy warehouse listed in the newspaper. I kept that for 3 years until I couldnt stand it anymore. Went to a real mattress store and bought a $600 mattress and its like night and day. 2 years later its still like new. Will NEVER buy a crappy mattress again. So, what else isnt worth skimping on?