Really good ideas here for little ones.
I plant Tumbler tomatoes either in pedestal containers,
or in an upside down container which can be hung so a child can reach and pick the tomatoes.
Yellow pear tomatoes are great for tiny hands and because they are not very juicy---they do not create juicy messes.
Instead of candy etc. for Easter:
a small child's watering can, small trays with small plastic pots, seeds--cucumber, nasturtium, (small fingers need larger size seeds)
And this year I have found a series of books called Greenhouse Kids---they are short mystery stories for children.
