Make your own party decorations and invitations.

 Themed Birthdays with something you can supplement from a recent holiday (closeout sale) or a current trend. By using the available products for something trendy, like a current movie, you'll save a lot of money on shipping and on the products themselves. This can also be really exciting for the party goers because they are familiar with the theme of the party.  Capture big item concepts to use in your decorations and stick to a main color theme. Buy one set of themed plates and use your color theme to buy additional plates that you  need. Go online, find, customize, and print designs for all of your needs; design your own wall decor, invitations, welcome signs...