find a stream and walk along it (we did this a lot in the rian last year, dressed in waterproofs, so the sunshine is a bonus) take a picnic as my dd will stop and throw stones, pick daisies and chase them down the stream etc.
den building, with a sheet and some trees
face painting and dressing up
sand pit
rice or lentil tray with implements to pass it from one tray to another etc.
t-shirt decorating
play dough (even better if you make your own, let her choose the colour and add glitter)
baking, baking and more baking
biscuit/bun decorating with hundreds and thousands, silver balls, edible transfers etc
hand/foot/body prints in paint on large pieces of paper
painign with water (ie allow her to paint anything with a brush and some water)
planting seeds
obstacle course
egg and spook/sack races
musical instruments
gymnastics
football
ballet
will think of some more - can you tell i have a high maintenance dd?!