I just wanted to show how you can make a powertex figure on a shoestring. This is a dolls head from Poundland, it was £1. I cut off all the hair. The base is a wooden meat hammer from Wilko - £1.50. The body is crushed tinfoil to shape, covered in masking tape (both can be bought for £1 from Poundland).
Then some bits of cotton fabrics, a dishcloth, an old woolen scarf and some odd pieces of t-shirt wrap. But you can use whatever you have. You might have an old shirt or t-shirt, anything will work as long as it's 80% ish or more cotton. The most expensive thing you will need is the Powertex, but it does come in various sizes so you can get a small bottle if you aren't sure about it.
(100g - £7, 250g - £10 or 1kg - £17)
I made another one, but this time instead of a meat hammer I used a cardboard tube and a piece of wood that used to be a panel in our old gate. As the heads are plastic, I painted everything in a coat of black gesso.
And as I fancied something totally different, I used red powertex with the dishcloth and the t-shirt wrap and transparent with the pieces of scarf.