Speaking of paper talismans, here is one that has been particularly useful for me these days. Well, techically it's not a sigil but heck, the name's got a nice ring to it.
I also call it the Triangle of Negation, or the "pigil" sigil ("pigil" being Tagalog for the word "prevent"). It's based on the classic ABRACADABRA charm. Unlike my other talismans, the words written on it are pretty obvious and straightforward. It's three sides nicely accentuates its correspondence to Saturn, whose number is three. In classical Western magic, Saturn is the planetary sphere to work with for purposes of banishment and destruction.
I admit, this was originally designed for 'evil' purposes, but actually it's doing me more good than harm.
Want to control your diet? Place it on the fridge.
Prevent yourself from impulsive spending? Put it on your wallet.
Fight your addiction to Facebook? Stick it onto the computer monitor.
The paper was stained in a potion of black pepper, cumin, cinnamon, rust, bone dust and god knows what else (I forgot the rest). To make the most of Saturnian energies, it is to be made and charged on a Saturday, during the hours of Saturn, and preferably when the moon is in Scorpio.