I'm a bit late coming into this discussion for this year but maybe it will be useful for someone next year.
I always loved the "hunt" just as much as the prizes. So I think a good scavenger hunt with clues and then a treasure or prize at the end is really fun. The treasure could be a big fun item or an easter basket of some kind.
The egg hunt could be plastic eggs that contain clues for the scavenger hunt and maybe a few along the way that has a goodie inside, rather than just an egg hunt with all the eggs having to be filled with goodies.
Things that are "new life" and "spring time" themed fit in with easter, so things to do with gardening, supporting wildlife, nature, the spring season, etc. all could be used as items for an easter basket or treasure.
Gardening themed;
-Fairy gardens! That is what my sister did this year.
- colorful packets of seeds to plant
- a little pot of herbs or pretty flowers, could be edible varieties
- some little plants to plant in their own garden
-seedling or sapling to plant
- a few small gardening tools
-cute little gardening gloves
-sunhat
-larger gardening items such as small wheelbarrow, rake, watering can, etc.
-cute or funny plant markers for their garden
-sunflower house kit (picture of a sunflower house with sunflower seed packet)
-butterfly garden kit ( Milkweed seeds, pollinator seed mix, butterfly water dish, little "Butterfly Garden" sign to put up).
Nature and wildlife themed;
-a homemade craft kit of some kind
-a bird house they could paint and hang up, or a birdhouse kit they could build
-bird feeder with seeds
-humming bird feeder
-magnifying glass
-binoculars
-easy to use bird guide book
-a wild flower guide book
-guide to local wildlife
-educational posters for animal tracks and sign, plants, trees, flowers, butterflys, etc.
-identification cards for wildlife or plants
-Mason bee house
-bat house
If your kids like art, art supplies are great; paint, paper, craft supplies, color pencils, crayons, etc.
- supplies to make art for their gardens. Pintrest has lots of cute ideas. You could paint rocks or make plant markers for example.
-sidewalk chalk
Just for fun stuff I remember getting as a kid;
-jump rope
-kite
-sand box toys
- stuffed animals
- jacks game
I only liked the chocolate in my easter basket. I use to save all my Jellybeans as treats for my pony mule. He LOVED them.