This gives me the massive Rage.
A few years ago, we started going to my PIL for Easter and it's become a fixture. Fair enough, they do other things at Christmas and they really look forward to seeing the DSs and their other GC at Easter. It's a big family get-together (throughout which I grind my teeth and try hard to bite my tongue, but that's another matter).
MIL surprised me massively the first time by heaping presents (we are talking 'big' presents here, like a large boxed playset) on the table for the children to come down to on Easter Sunday. I'd already offered to do the Bunny stuff (and I still do, but I do check to see if she'd rather do it). In addition to a 'big' present for each child, there were smaller things (like soft toys and bunny ears) and a large egg and a large chocolate figure per child. It has continued in that way ever since. 
I checked with DH - no, he and his sister never ever got presents at Easter, just an egg.
So we now have this sodding expectation built into Easter whereby the children know they're going to be given fairly substantial things (the size of the presents has decreased since the first time, as apparently my MIL was feeling her age and felt she wanted to do something big) alongside the half dozen eggs they will accrue from GPs, parents, uncles and aunts, etc.
It makes me really sad. Easter was never an occasion for big gift-giving, surely? An egg hunt in the garden and the massive stash of chocolate is enough.