Here is an idea that worked well with my Primary Language classes.
You will need to buy some coloured balloons - I used a uniform shape, the normal round balloon. You will also need packs of chocolate mini-eggs, preferably ones with a foil coating.
The idea is to fill the balloons with as many eggs per balloon as you have members of a team and use them as prizes for team games. I used them as follows:
We have been learning colours and simple facial descriptions, hair, eye colour, big, small etc. Each team is given a balloon containing the chocolate eggs plus felt-tip pens. They have to follow a simple set of instructions to draw in and colour a face, hair, eyes, nose mouth and ears. When they have correctly completed their drawing, take a picture of their work for display, then they pop the balloons with a cocktail stick to get their Easter rewards.
To get the eggs into the balloons, use a small piece of hollow tubing, (I now have a rather shorter yard broom!), feed the end of the empty balloon over the tubing, drop an egg down the tube and 'blow' the egg into the balloon using a short burst of air. Don't try and blow the balloon up as you do this. If it suddenly deflates, it will propel the egg back into your mouth at very high speed, not nice! Your aim is just to get the egg inside the deflated balloon.
'Elf 'n Safety note: This is why I recommend using foil covered eggs as blowing into the balloon might spread bugs.
Once you have put as many eggs in as are members of the team, then blow the balloon up and tie off.
You can use the balloons as prizes for any other team activity. You could also insert pieces of paper when inserting the eggs as 'clues' in an Easter Egg hunt, or word slips for revising topics. Let me know if you think up any others.