clarrus,
with all due respect, I can't believe you asked that question!
I think that the TT is the most versatile accessory we magicians have access to.
Get hold of "Darwin's 101 Thumb Tip Tricks". In it are effects from the likes of:
Penn & Teller
Lance Burton
Geno Munari
Blackstone
Michael Skinner
Dai Vernon
Al Baker
and many more.
Please allow me to bore you some more with the following story:
Let me tell you a true story about a Thumb Tip. I know that its true, because I made it up myself. A few years ago, I booked a club date about 100 miles outside Las Vegas. Upon reaching my destination and opening my tunk to get my bag of magic tricks, I noticed it was not there! I realised that I had left them at home. I was so shocked I almost had a laundry accident!
I thought to myself, what should I do? I had to do a half-hour show in just a few minutes, so I certainly didn't have enough time to return to Las Vegas and pick up my equipment. I then said to myself, "Self, why worry? I have a TT on me!" So I borrowed a few things from the bartender, such as a napkin, matches, cigarettes, a glass of beer, etc. I then proceeded to do my show with those articles and nothing else but a TT.
When the show was over, I received a standing ovation, which isn't easy with an audience full of midgets! The owner of the club came backstage to pay me and said it was the greatest show he had ever seen! So I thanked him and gave his seeing eye dog a biscuit.
As I drove back to Las Vegas on that long lonely road, I suddenly realized "With this little gimmick I can rule the World" And that is the story....except for the midgets!
Gary Darwin (King of the TT)
So clarrus, I hope that answers your question, and I didn't bore you too much. It is only exposed by those who don't use it right, so practice well and good luck.
Christo