幫我作rainbow riddle?

Mill + Walk + Key=
Milwaukee

What burns during the day and sleeps at night?
Sun


No one can see me when I race through your house. Moving daily, it seems like I never stop. No one can catch me not even a cop. But being felt by my presents may calm your nerves?
Wind

I have hands that wave at you,
Though I never say goodbye.
It's cool for you to be with me,
Especially when I say, "HI.&qu ot;
I am usually made of metal or plastic.
What am I?
Fan

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dmoz.org/Games/Puzzl es/Brain_Teasers/Rid dles

www.telacommunicatio ns.com/misc/riddles. htm

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www.lautman.net/ridd lesofriddles/blast.h tm

www.enigmagraphics.c om/riddles

www.kreol.mu/Siranda nes_1.htm

www.funtrivia.com/qu izzes/brain_teasers/ riddles.html

www.braingle.com/Rid dle.html

what is rainbow riddle?