I use cribs in my mentalism since a long time. And a crib can be a very good friend. The reason is not that you have not a good memory but it makes you relaxter during your show. You can focus on your prasentation. And I like to look for new places for my cribs.
Richard has very good and interesting ideas to hide cribs. In this book you will find clever and practical ideas.
Ideas for the working mentalist. I like this book.