I agree - if you do any home mechanic or home improvement work, you should probably get a slightly larger unit. I bought a Craftsman 1.5 HP 5 Gallon tank compressor about 10 years ago. It gets used just about weekly. I have several pneumatic tools (Impact Wrench, 3/8" Ratchet) that I use with it. A GREAT time saver.
I've rented nailers for building a deck and finishing off my basement, blowing water out of pipes, etc. A unit with a small tank & CFM compressor will not have enough volume, recover quick enough, etc. to use with tools.
Also, if you are in to Halloween animatronics, there are some fun things you can do with pneumatics.