The effect you described was John Cornelius' Shrinking Card Case. Its freaking fun to perform.
As for gimmick/ gaff books and DVDs...
5X5 Japan. New Magic of Japan, both of these are great books for gimmicked effects.
Joshua Jay/ Joel Givens Sessions book is great. some heavy gimmicking, but boy are the effects amazing.
Martini/ Magic Makers have a Art of Card Splitting, which is quite fun.
Paul Harris' Stars of Magic is a great purchase. Some impromptu, some heavy gimmicks, etc...
John Cornelius DVDs are usually a good amount of material with gimmicks.
Wayne Dobson has some comedy stage stuff if youre into that
Swami Mantra is a great book just for some classic magic/ tricks.
Scarne of Magic Tricks has a great bunch of classic magic which requires something special.