First you have to make a washing machine out of cardboard and then you can crochet around it. You can also find the instruction for the cardboard washing machine on my blog. To make the washing machine you need:

2 large plastic bottles (1.5 l)
carton
fiberfill
Catania wool by Schachenmayr in white, with a small woolen rest in light blue and turquoise
Crochet hook 2.5
3 small buttons
1 pipe cleaner or 1 small piece of wire
Printer, paper, scissors, glue

You can use any wool for the washing machine, just crochet all the sides exactly to the edge and then crochet all the pieces together. It is very easy.

Have fun!