One of the most popular basement ideas is to turn your basement into a workshop. In order to do this, you need to have a basement that has a door to the outside. Otherwise, you will have to bring all your materials and projects through the house and down the stairs. So, the basement cannot be totally submerged in the ground.
You will need storage for all your tools so shelves will be needed and walls can be used for hanging storage spaces. If the walls are concrete, you will need to figure out how you can best attach shelves or hooks for hanging.
Any basement workshop work area needs to be big enough to be safe. If you intend on building things, there needs to be enough space to acually work. You should make sure there is room to use your saws and drills and what not and not jeapardize your safety. A cramped space will not work with basement ideas like this one.
Basement lighting is also an important safety issue. If you are going to be using dangerous tools (and most tools are dangerous), great lighting is a necessity. Natural lighting is best but since this workshop will be in your basment you might need some bright flourescent lighting on the ceiling. Lamps are OK but overhead lighting is the safest.
You will also need to make sure there are electrical units in places where they are accessable. Depending on the basement and whether it is finished, there might not be convenient electrical units in which case you might need to use tools with a Skil 18v battery.
Basement ideas like this one are great because they can turn your home into an enjoyable place to live. If you like working with your hands and building things, a basement workshop might be the right choice for you.