Ideas for your own "totems"...
I have always had trouble with lucid dreaming, so bad it was need the edge of hallucinations. I would have entire memories that didn't exist. My grandmother actually gave me the idea of a totem when I was about 9 years old only she called it a charm. She came up with the idea because of her night terrors.
My totem is a rosary, but a very specific one my grandmother helped me make. It has distinctly scented rose beads and a sterling silver dove for the hail holy queen bead. The dove is connected the the chain with gold coloured chain links while all the other links are silver. All the beads are perfectly smooth, but every third bead if the decade has a small hole drilled in it. On the crucifix (which is pewter so it doesnt match the dove) INRI is inscribed upside down and the forth decade only has 9 beads rather than the usual 10.
I keep it in my bra everywhere I go because, as a girl, no matter how much I'm changing clothes that's typically something that is NOT going to change... If I ever have de ja vu, or i'm caught staring off into space and I can't look away, or I encounter a scent that brings up vivid scenery in my mind I pull it out and smell it and count the beads while I pray. If there are only nine, I close my eyes and let my dream dissolve around me.
As you can see VERY VERY specific and nearly impossible to be recreated even by my own mind. The best part is the rose scent; I'm very sensitive to smell and my mind can never get it perfect.
This has always worked very well for me in the past. :)
I had 2 other ones that I used temporarily when I was in public school because any religious affects I would have been caught with would have been confiscated and I'd have gotten a detention... The first was a 1976 matchbox metal canary yellow jeep wrangler car that sat on it's axel wrong so it wobbled and drifted to a certain side when you pushed it. Only I knew the specifics of how if wobbled and to what side it drifted... It had an angel wings decal on the hood.
The second was a weighted pewter turtle with a jade shell that had a small heart etched into the bottom. Only I knew how it was weighted and about the little heart on it's underside...
Just some thoughts for those of you thinking about creating your own "totems" :) I think that vision is easily deceived and that it's harder for the mind to conjure up more realistic feelings for some of the more complex senses such as smell or taste... Another thought is keeping spearmints in a peppermint box, or vice versa: Your dreaming mind will expect to find peppermint but it won't be, hopefully you will notice the incorrectness. Maybe a marble with a small bit of flat surface: hard to see at first glance, but when rolled gently it will rest on it's own. Or keeping a magnet with an object that's not so obviously magnetic (i.e. rather than a paperclip, use a hair pin, etc) The laws of physics may be bent in your dream world, so it may not stick. Maybe a spoon even: if you look at your reflection in the concave end and it's right side up, that could be your RC...