Here's what (else) I did...
Frugal-ness: 5/5 No cost as the whole experiment was left overs and already hads!
Time cost: An extra 1/2 hour per item - and a much needed cuppa!
Skill level: Pretty easy, especially if you have already dyed things
Fun-ness: Can be tooooo much fun - very hard to know when to stop... Try not to pop through your husbands grey 1980's grey suit, no matter how much better it will look in patchy bottle green!!!