Saw this on pinterest which inspired me...
We used just natural colours and some coloured thread.
For the 1st felt square A just grabbed as much fleece as she wanted and crammed it in to an Ikea freezer bag. She then put in some coloured thread.
We then filled the bag with warm soapy water until the fleece was completely soaked. We let out excess water then rolled the bag up as tight as possible to squeeze all remaining water. A then jumped and squeezed and rubbed at the bag for as long as she wanted, about 6 minutes, which I thought was impressive!
Then we took it out and dried it on the radiator. Eh Voila...
We made another one, but we used a roll of fleece as a background, like a piece of paper then put patches of other coloured fleece on top with some thread. It was easier to design that way, then slip in to the freezer bag.
Because we just did it for as long as she could be bothered the felt isn't as 'felty' as it might with longer bashing and rolling. After speaking to my mum about it, she recommended rewetting and then rolling the bag with a rolling pin 200 times either side. I reckon A would like to roll with a rolling pin so we will do that another time. Also mum is sending some white fleece which we might try and dye then do a piece a bit more colourful , they might then make a nice gift. Also I thought about doing the squares in a triangle instead and making felt bunting!