Angry Bird balloons are pricey but you could opt to get a few and then bulk those out by adding in lots of plain blue, red, yellow or black balloons to match. When my daughter has her birthday parties, we like to get tons of balloons. We tie a small group of 3-5 together with curled ribbon and then hang them around mirrors, doors and up high on the walls using string and sticky tape.
The great thing about balloons is that young kids love to play games with them which involve batting the balloons to each other (a bit like volleyball) and, of course, kicking balloons and popping them.
For younger children, you could attach 2 or 3 colored balloons to their party bag at the end of the event which looks really cute and pretty.
Crepe streamers are a very inexpensive way to instantly add color and brighten up a room. These can be looped around the walls using sticky tape making lots of U shapes. Or tape in one corner of the room, twist the crepe round lots of times and attach over on an opposite corner, letting the streamer hang down a little in the middle.
Angry Bird Walls
You can quickly decorate a plain wall with a large, Angry Birds poster which will really set the scene. If you have someone who's a dab hand at drawing then you could buy some large paper and make your own Angry Bird characters and scenes to decorate your room.
Wall decals are special stickers which peel easily on and off painted walls. They are a fast and fun way to jazz up blank wall spaces and set the scene you want.
Angry Birds Tableware
You cannot currently get any official Angry Birds tableware. What you can do is get plastic or paper cups, plates and dishes in bright colors to match in with the rest of the Angry Birds decorations that you have.
Food tables can be decorated with plain red or blue table cloths and matching napkins. You can purchase throwaway paper or plastic cloths but I'm a bit of a green girl so it has to be fabric for me.