10 Answers

Inch Worm.

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Fingernail or Toenail
Hair (You pick the place)
Your patience
The distance between points on a ruler
Often there are recipe instructions calling for stuff to be cut in 1" cubes or lengths.
Icicle (small one)  
Hot Wheels something or other
Barbie's shoes
There are shoes with 1" heels.
Bone
Postage stamp
Tooth

I gotta get some work done around here.   

Don,t get me started!!!!

Rule of thumb is the length from the first to second joint on your pointing finger.

Get a tape measure out and measure one inch on many different things in your house, large and small objects.  Soon you will begin to understand what one inch is in relation to something else. :-}

my private parts when below freezing..

Cap off a marker, a US dollar bill is 6 inches long so i/6 th of a dollar, a US nickel is ine inch across. the bowl of a teaspoon., a 1 inch binder clip ,second hand of a clock, A piece of honey comb cereal, many lids from lotions and shampoos. Hope this helps.

This line is 1 inch long ---------------------just by looking at it,you can guess what objects would be the same in size.A paper clip comes to mind.

An eye?