I have had the hobby of sculpting and wheel throwing clay for many decades. I have made several types of clay hedgehogs, using both synthetic and natural clays.
This summer, I was at the ocean on vacation and with the help of my husband and friends, we made a giant sand hedgehog (Sandy).

Building was pretty fun, as was the reactions of those who saw our creation. Sandy was quite a thing at the beach. After we completed it we were asked just what it was. "Why, a hedgehog!" was our response and many people talked to us about just what a hedgie was, why have one, and so on. Little did we expect that a mound of sand shaped into a hedgehog would create a chance to teach about hedgehogs.

Then this winter after several days of heavy snowfall my husband and I created a snow hedgehog (Snowball). The neighbors were out making standard snowmen, and taking pictures of ours. We used the ice frozen across our birdbath, broken in two for the ears. The solar lights in my garden for eyes and a stray peice of garden hose for the smile finished him perfectly.

With both snow and sand, the formation of the hedgie was simple. We made a giant mound, in the shape of half a ball. Then to form the forehead, we cut away the top two thirds of the front of the mound. The nose was shaped and sculpted out of the remaining third of the front of the mound. Eyes can be anything, rocks, coal, shells, or leaves. Quills can be sticks, weeds, sand, or snow formed into a cone and placed over the back and sides of the mound.

Go out and build one, take a photo, and share it. I now plan to hunt out a pile of dirt this next summer and create a giant dirt hedgehog.