S.P.
a few things I have filled baskets with in the past are,
legos
art and craft supplies
fun bath treats
fun toothbrush, paste, etc. treats
books
bubbles
stickers
theme of their fav things - barney, power rangers, pokemon . . .
also, a really fun thing to do with Easter baskets is grow grass in it. Here is a link to a post I did with directions. http://www.myatlantamommy.com/2010/02/very-green-easter-b...
thrifty fun has a great list for basket fillers,
http://www.thriftyfun.com/tf000796.tip.html
have fun :-)