Compact mini fridges can be great in the summer. Obviously you can use them where space is limited, in a small kitchen for example - a student dorm or in the workplace perhaps.
You can even get some that are small enough to sit on your desktop so that you always have a nice cool drink to hand when you want one. Some of the very small ones will even plug directly in to your computer's usb port. How handy is that?
Have a look at some examples of mini fridges below and see if there's anything that takes your fancy. Some of the designs are quite attractive. I like the retro Coca Cola ones best I think.