Baby Shower Decorations
One of the easiest ways to decorate for a party is to purchase "party ware sets", consisting of matching table cloths, plates, cups, and napkins, that convey the party theme. Celebrate Express has several cute Baby Shower party ware themes or you can go with a generic pattern, such as flowers, solid pink or blue if the baby's gender is known, or gender neutral yellow and green.
A word of caution, sometimes less is more when selecting theme party ware. For example: if the tablecloth, plates, cups, and napkins all have the same design, it can be a bit overwhelming and hard to find things on the table (they all blend together). Sometimes it's better to buy a couple items in coordinating solid colors.
If you're on a tight budget, look for party ware at your local discount store (Target, Walmart, Kmart, etc.). The selection may be a bit limited, but the prices are often less than party stores.
Balloons provide a lot of impact for little cost. Just be aware that latex balloons only "float" for about 8-10 hours, so don't buy them too far ahead of time. Mylar (foil) balloons last for days. Be careful not to order more balloons than you can safely transport in your car.
Streamers are another easy and inexpensive way to make the party location look festive. Hang a fringe of streamers over the doorways or make a canopy over the refreshments by attaching streamers to the dining room light fixture and twirl them down to the corners of the table.