-Those little plastic connector string-thingies that attach price tags to clothing and that you have to cut off, thereby sending the little "T" ends flying to places where you (inexplicably) cannot find them.
-The belief that there is always one more application in the toothpaste tube, inevitably resulting in toothpaste tube torture.
-The washing* of soiled Tupperware containers, which isn't so bad but always requires the drying of said containers, which is nearly impossible due to all the little ridges and grooves (particularly in the lids) where droplets of water cling and that require the person drying to fold up the towel and then manipulate it into the offending crevices.
-Missing puzzle pieces, particularly on brand SPANKING new 2,000-piece Springbok puzzles, which are effectively reduced to 1,999 pieces and rendered infinitely less valuable than their pristine counterparts.
-The last remaining crumbs in the potato chip bag, particularly when one's Dearly Beloved straightens the bag, thereby creating a "taut" corner, which he then upends into his mouth, but due to some unidentifiable miscalculation (perhaps operator error in bag-straightening or excessive crumb velocity due to misjudged bag upending speed), scatters the remaining potato chip crumbs into an array of places including but not limited to: his mouth (45%), his face (30%), and upon the floor and/or into the unnavigable landscape of his easy chair (25%).
-Instant lottery ticket scratch-off turds (which are admittedly less irritating when the lottery ticket yields winnings).
*applies to both manual and automatic efforts.