An old German tradition just before Eastern is to blow out the yolk and white of an egg, paint the empty egg and hang it up on some branches. We do that every year. The kids love it. You can keep the colored eggs for next years decoration...just like X-mas.
I guess this tradition is still a pagan relict, celebrating fertility.

Not that we ever get that much snow here in London...but I love the playful way of using snow as a projection surface. Very tactile in some weird way...
Can't wait for the next snow to happen and try it out with my kids.