__________ IN A  _________

Each clue below can be answered by an expression in the form of _____ in a _____ .

1. Warning of old for miners of toxic gas
2. Like some men in the power tool section
3. It'll never happen
4. Like some special experiences
5. Just not fitting in
6. Something bought sight unseen
7. Well organized
8. Big fuss over a minor issue

Answers:

1. Canary in a coal mine
2. Kid in a candy store
3. Not in a million years
4. Once in a lifetime
5. Square peg in a round hole
6. Pig in a poke
7. Ducks in a row 
8. Tempest in a teapot