Here are some of the things my dad, brother and I are always stoked to get.
Movies, I am trying to compile every best picture winner in my dvd library.
nail clippers, I loose about 20 of these a year.
tweezers
duct tape, dad gets me this every year and referrs to it as " I got you some tools".
screwdrivers, good ones.
those grippy egg things for stress / strenth
guitar pics and strings
Berts Bees lip stuff (chapstick) that stuff rules.
Shave Oil, shave soap, shaving brush, aftershave samples, styptic pencil
Sunscreen
Golf Balls and tees
toys from Archie McPhee
http://www.mcphee.com/Harmonicas, kazoos and any other small cheap instrument
Crazy Glue (more "tools")
driving range or batting cage tokens
Christmas Ornaments
refrigerator magnets
small flashlights or LED lights
Visine, mints, gum, etc.
anything "lucky"
lighters
tire pressure gauge
xacto knives and those dental tool things
gift cards
earbuds
pens and pencils