Crafts: Dying Buttons and other plastic things

Here is an interesting link for dying buttons, feathers, etc. which can then be used for other crafts.  I am thinking of trying it out with different dyes like paints, using recycled cans so as not to ruin pots, it even sounds like a scientific experiment in the making:) Before I get rid of any clothes too worn out to be passed on, I usually cut off the buttons. So I should have quite a collection.  Looks like they will come in handy now.  So there you go, another example  of frugal crafting with what you have.