Birthday Decorations

Any ideas for cool and inexpensive decorations for a birthday party? For a young person if nothing childish too .. but some fun things. I love crafts crafty nothing I can do to decorate would be fun. I know I want to use a lot of stars and green and silver color in decoration.

Once we bought super cute gift bags from the dollar store and put a pot of flowers in them and some tissues, they have great facilities and we sent them home with guests. Balloons are also a fun way, especially outside the door. Window paintings are fun. Hang tinfoil stars everywhere, it would be nice. Star cookies? silver paint marker is based on almost everything, and the green one. You can draw on a sheet of plastic, all plastic really. Good luck!