How about a theme garden? Some popular themes: desert plants, tropical plants, rose garden, herb garden, "country" garden, or a garden in a specific color or set of colors.
If you don't have a
front porch, could you create one? Building a covered porch in front of
your home is one option, using awnings is another, or you could create a
small "porch" area using hedges, fencing, or by placing a gazebo or pergola to one side of the house, accessible perhaps by a garden gate.
features such as small bridges (to cross swales, creeks, or areas where
water always accumulates), bird baths, and lanterns are great for the
front yard too! Make sure they're placed along natural traffic spots so
they can be seen and used regularly.
garden can be gorgeous if you plan it right, with brilliant displays
that change depending on the season: bright spring flowers, a different
set of (perhaps more intensely toned) summer flowers, fall foliage and
Consider special plantings at
the entrance to your driveway, near your mailbox, at the start of your
walkways, and around the front of your home (especially near the front
door). These are places that people first encounter when they visit your
property: make them look their best.
One place to get many other landscaping ideas is in home
magazines. While you can't significantly change your existing house, you
can adapt what others have done to fit your home.
Try these garden style design sheets
from LandscapingNetwork.com, which have a lot of good landscape design ideas for
many different home and garden styles. (Just be aware that most of their
plant recommendations are not edible!)