plastic bags are good because they come in all sorts of colours, are pretty tough and well, if you're making flowers you might as well be green and recycle a bag or two.
This instructable gives the directions for making a rose like the one below.
Step 1: Getting your materials together
- Plastic bags - lots of pretty colours!
- Green string - preferably something quite stiff. I used some plastic parcel string.
- A sewing needle - one with an eye big enough to thread your string through.
- A knitting needle - or anything pointy
You might also want a pen and some sticky tape.