My girls celebrated easter after they turned 1 so probably 14-15 months old I guess. We aren't religious at all and we do the Easter Bunny thing. We generally have a trail of bunny feet to a stash and an Easter egg hunt.

No alternatives to chocolate in our house - the is no alternative as far as my girls are concerned, it is pretty much their favourite sweet thing so they do get to have it at easter as they don't get it very often. In addition though they do tend to get pyjamas, a craft activity and a trinket like a mug or something.