I do quite a cool routine which can be played up to sound incredibly impressive. I use a forced word and playing card but there's no reason you couldn't modify the routine to have a thought of word as opposed to a forced word appear on the card.
essentially, in my original routine you have a folded prediction on show, have a card selected 'at random' and a word selected from a book/mag (I use the business card with a hole idea from Maven's VideoMind series to force the word) and when the prediction is unfolded it's a copy of the selected card with the word written across it. It's simple and effective, I explain the 1 in 178,000 chance I have of getting the thing right to emphasize the situation!
Off the top of my head, maybe you could have a couple of duplicate cards, say 2 '3Hs'. force one and have it signed, discover the word they're thinking of from the centre tear and make their signature morph into their chosen word using your favorite colour change... Something like that?
Hmmm... Thinking about it I might stick something like that in my next book!
With the right pen you could make it look like the word go burnt onto the card, then it gives reason to tear and burn the billet and context to the effect!
As for books with cool routines, check out some older stuff and see what you can modify - Anneman's practical mental magic maybe?
For more recent effects, You could use it in conjunction with Stigmata - even if you just make the first letter appear. Or maybe use it with 'Disintegration' an ashes on the spectator's arm effect.
There's so many possibilities - I'm considering going and picking up Sean's notes just from the ideas floating around my head now!
Hope that helps!
D.