Many homeowners finish their basements with the goal of creating additional family living space; a place to gather and watch tv or movies and to just hang out. Sometimes, this additional finished basement space is also used as a guest area. It can be wonderful to offer a space where your guests stay and feel comfortable in having their own personal part of the home. If your goal in finishing your basement is all of the aforementioned, installing a small bathroom and a kitchen will serve you well.
Adding a kitchen to a finished basement is not as difficult as you may think. One of the first things that you might want to do is to throw away your visions of an overly large, grand kitchen (unless of course your basement will allow such a kitchen) and make sure that the kitchen does not take over or be the focal point of the space. You want a basement kitchen to be a convenient and functional area and smaller does not mean less function and convenience.
Have a look at these small kitchen ideas from Houzz. While these kitchens may not be in a basement space, the designs and functions could be incorporated into a finished basement plan.