Great for twins! Make a Noah's Ark cake! Check your local bakeries to see if they will make one for you, or if you can bake cakes,
try to do it yourself.
If your party is large, then place sets of stuffed animals on each table next to or weighting down some balloons. Buy two for each table.
So, one table would be the giraffe table (with two giraffes), one could be the elephant table, etc...
If it is a rather large party and you will be having assigned seating, then this could even be more fun. On the seating cards, instead of
numbers write the animal table that they are assigned to. A great ice breaker!