Easter Eggs

Buy a supply of cheap easter eggs in boxes.
De-construct the boxes and re-assemble them inside out so that you have a blank surface to work on.
Use a variety of construction materials, paint, coloured drawing tools to re-design the box.
If you wish, also remove the egg wrappings and re-wrap them in a different way.

Daily History

Get yourself a copy of '365 - Great Stories From History For Every Day Of The Year' written by W.B.Marsh and Bruce Carrick, Icon Books, 2004.
ISBN-10: 1-84046-675-8
Take 5-10 minutes each day to outline a historical event that happened on that particular day

EXAMPLE: For today's date (13th April) this book tells me
- today is the birthday of Thomas Jefferson in 1743
- Henry IV of France issued the Edict of Nantes in 1598
- the first Tzar of Russia, Boris Godunov, died in 1605
- Louis XIV used the phrase "L'Etat, c'est moi" in 1655
- the British Parliament passed the Catholic Emancipation Act in 1829

Making the Elements Visable

A very simple idea that demonstrates the elements of art in a highly visible manner is to have a school "dress-up-day". This is not to be confused with a fancy dress as it involves no characters, masks, etc.
To begin with you need to discuss exactly what the elements of art are with the children (and show examples) - lines, shapes, colours, tones, patterns, textures. The children then take part in a "no uniform" day but must come to school dressed in clothes that show all these elements - hawaiian shirts, striped scarves, hats with feathers, polka dot skirts, odd brightly coloured socks, odd shoes with the laces replaced with coloured ribbon, fluffy jumpers, etc. etc.
Add another element to this by taking photos of the children and using these as a stimulus for drawing/painting.
Great also as a fund raising activity - each child must bring in a small amount of cash for a nominated charity.