Edit: THis mystery has been solved on another board. The story in question is by Robert Sheckley - Untouched by Human Hands.
I have googled everything I can think of looking for this book for quite a while, and have never even come close to finding it. Sometimes I wonder if I created it in a dream.
When I was in grade school in the 70's I read a book of science fiction short stories in the school library. One of the stories I remember the most was about a man who traveled from earth, somewhat instantly as I remember, to an alien warehouse of sorts.
In the warehouse, he found many items of various sizes, one of which I remember vaguely being something like "Zorgs Crack FIller" which when he opened the small package it began to expand to huge proportions. Another thing I recall he found was some sort of transportation that he determined to be some sort of living being.
I almost think there was another story in the book about a man who was contacted by an alien, giving him instructions on how to turn his skin blue with various chemicals to prepare him to travel to a new world.
I would so love to read this book again and add to my library. Thanks for all you folks do.