A Golden Rule of Mentalism Avoid Using Anything That Looks Like a "Prop!"
Mentalism is a KINDRED art allied to the greater family we know as "Magic" and one of its strongest elements is the psychological approach that makes it "real" and less "trick-like"
I've invested thousands of dollars on effect systems that I ended up not using because they looked to corny and too much like a magic trick vs. something paranormal and enchanting. More so than magic, we must evaluate the tools we choose to use and why in that they all help define who we are as the thespian... let me explain.
I'm in the process of an evolution for my Mystery Dinner Theater services & related character. I'm going so far as to make shirts, slacks, etc. that are of the 1890s era, I now sport a unique set of "Pork Chops" on my face and have my hair growing out. I'm even working with a local machinist in making a custom wheelchair that looks like the Victorian era wicker-back chairs (complete with chain drive action, etc.)
All of these things are "props" but they are props that punctuate the image which in turn allows me to guide the audience back in time; that they may experience how the parlor musings of the past where presented, etc. Now, if I were to toss in a commercial item (straight off the shelf) such as a BIP Book or translucent Buma Board I'd destroy the psychological illusion I've spent time and money trying to create e.g. the
solution as it were, is to keep things extremely simple; the Fowler Force Pad arrangement is bloody simple but has proven itself time and again because it is an innocent looking device vs. some kind of fancy contraption. What you need to ask yourself is, will this version work best to what I'm out to accomplish?
In an
Add A No routine I've done the numbering was all secret; I had a small envelope inside of which was a small pencil and an index card. I'd hand it to one person have them write a number, they'd pass it on to anyone they choose, etc. after about 5 numbers are recorded, the card replaced within the envelope each time so as to prevent all but those involved from seeing the numbers... the envelope would be sealed, held by a small clip for all to see... a few other bits would be done with other members of the group and in so doing a value discovered... I ask someone from the group to remove the envelope, all the random numbers and the total made matches the information associated with my previous actions... the sum being a "premonition" of sorts.
This set-up can be easily modified to meet whatever it is you may be wanting to accomplish but the force comes about in a very clean, unsuspected manner... I'll give you a hint as to how and where this comes from... the same routine can be done with a HIMBER Wallet.
