I've heard about how abusable the Glyph Seals from MiC are (pg 161) and am quite fond of using them on lower tier characters.
What uses have you found for them in the past? Any tricks you particularly enjoy?
Putting several on the inside of a buttoned pocket for multiple start of combat power-ups via one free action is a given.
One little combo I'm considering currently for a PF Magus in an upcoming game is combining multiple pocket seals with the 2nd level
Bladed Dash spell. Assuming multiple free actions are available per turn you can, by RAW, have multiple pockets, each with a
seal containing Bladed Dash,and pop them one at a time to get in the classic manga style near instant "multi-slash/multi-pass" attack
on one or more opponents.