Tasmania

Plenty of places to hide in Tassie, but to avoid the Christmas and school holiday crowds I'd suggest going west rather than east.
You can take the western explorer road south from Marrawah past places like Temma and Couta Rocks and continue on over the Pieman River and out to places like Trial Harbour and Granville Harbour.
Much more rugged country, and weather a bit less reliable than the north and east coasts, but you can generally get away from the crowds whereas the other side of the State is very heavily populated by campers over the school holidays.
Even closer to the sealed roads, you could try somewhere like Waratah, which is a pleasant historic mining town and has free camping behind the museum, and you'd probably find spots around Rosebery and Zeehan.
Good luck !

Thank you Wildmax i will start researching the places you gave me.
Cheers
Humpback

We spent Christmas some years back in a very small caravan park at Moles Creek, which has now changed hands/owners so not sure what it is like now. Located very close to Cradle Mountain and in a lovely small town. Playpus in the creek which runs through the park. Honey farm close by. Not so heavily populated for the holiday period as the east coast, as stated above. There are lots of nice areas on the western side of the State. but this was a favourite.

Cheers - Ngaire

Spent last New Years (arrived there a few days after Xmas) at Couta Rocks area mentioned above already. As said, it's pretty quiet there over that period. Be aware that Arthur River has very little in the way of food supplies etc, so take all need for the time you plan to be there. A small shop does exist there, but it's more a takeaway food shop then grocery store. It did have a very limited choice of groceries on a couple of shelves, but nothing really in the way of fresh food that I can recall there, more limited packet and tinned food. It can get pretty windy there as it did on our stay, so make sure you choose somewhere sheltered.

As noted above, be prepared for a bit of wind on the west coast, it comes all the way from Argentina with nothing in the way to slow it down. Great country though, just find somewhere with a bit of shelter.

Also there used to be a huge camping ground at Lake Burberry, just off the highway not far out of Queenstown heading towards Hobart. Wasn't free but it was cheap, there will probably be plenty there but there's plenty of space for all to share. And a freezing cold lake to cool you down on the hot days.