The baby may very well need a nap at some point during the festivities, so I highly recommend you have it at your home, if possible. Since the one year old will be unable to participate in many party activities, gear it towards the main age group of the cousins. Trust me when I say that your little one will be thrilled with the balloons, wrapping paper, and people. Here are some of the ideas I’ve used over the years with my 3 children (almost all of which were very inexpensive, and held at home):
Garden party: Held in the backyard. Kids wore swimsuits, lots of water play (squirt bottles, sprinklers), “Pin the bee on the flower” game, decorate small plant pots w/ markers & plant a flower in them as a craft activity/take home favor.
Luau: Again, swimsuits & water play. Homemade ‘grass’ skirts, made out of raffia. Limbo game. Hula dancing (well, not really… just fun pretending!). Sand art crafting.
Puppy party: We made ears out of pipe cleaners (for a headband) and craft felt. I made collars out of a pretty ribbon, with a dog or cat button sewn on the front. “Pin the tail on the puppy” game. Face painting to make the kiddies look like puppies or kittens (their choice). Warning: Be prepared for a lot of barking and meowing, along with some chasing. They had a blast, though, and the pictures are priceless!
Under the Sea: Using various shades of blue crepe paper and balloons, decorate the room(s) to give an underwater feel. Have The Little Mermaid playing in the background, and favors that reflect the theme… seashells, sunken treasure, marine animals, etc. “Pin the tail on the mermaid” game.
One that works well with a variety of ages, and fits your time frame is the
Winter Wonderland: White, silver and blue decorations… balloons, snowflakes, crepe paper, etc. For this one, I always try to plan a craft activity that could double as a holiday gift for the child to give a parent or teacher, but many choose to keep it for themselves. Last year, the kids made a brown sugar body scrub, and decorated the containers it was packaged in with stickers, raffia bows, and hangtags giving directions for its use.
We usually time the parties between lunch and dinner times, and just serve drinks, snacks, cake and ice cream. That saves a lot of money! Take tons of pictures, be flexible, relax and have fun. :D
*Note: None of the “Pin the _______ on the _______ ” games mentioned above are commercially available. I just made them out of poster board & double stick tape.