Buy some of those extra sturdy giant balloons, about £1 each, and some small ones,
blow them up(not all the way) hand from a hook, and add layers of ripped newspaper, soaked in water and pva glue(always buy from the builder's merchants massive container for the same price as a small tub from the craft shop)
Add layers (leave to dry between layers) until it's really thick and hard, the ballon will give up eventually, just bend a couple of coat hangers in the gap and carry on, do the last few layers in the coloured paper of choice, or white for painting, final coat of pva.
we make pinata, animals, dragons, fancy dress costumes, furniture, cost hardly anything, needs just a little imagination, and you can have more less anything,
If you finish a giant ballon in orange, you can cut out a scary pumpkin face, and wear a head torch, to guarantee winning any Halloween costume competition, as when the light shines out it makes a scary face on everything.
We love making things in this house, our blue tits have had the indignity of having to go up the nostrils of a troll/gargoyles type face bird box, which my daughter made a few years ago out of paper mache , we are about to make a few more as they need renewing, they last a surprisingly long time in the elements if you finish with PVA and varnish.
I've never grown out of making stuff,grew up to just make bigger things (I build), I'ld be terribly sad if my children ever lost the love of creating things.