Originally posted by dansamy ordinary, everyday stuff that you bought & when you started using it thought, "Wow! That was money well spent!"
For me, a few things come to mind, (I'm excluding my K5ii and lenses) :
free
Smugmug camera strap - so much more comfortable than the factory strap. Used it till I got my Spyder system
<$100
Cheap lowepro SD card holder on clearance - compact, worked great for organizing, empty on one side, full on the other, till it broke last year
Demb flash diffuser - bought it 5-6 years ago, always in my bag, and used 90% of the time with flash
Ebay wireless flash system - cheap, but something to play with.
Extra QR plates for backup cameras, long lenses.
Paintshop pro - I'm too cheap to use photoshop, PSP does what I need.
$100-$150
Spyder holster system - bought it for shooting a wedding, hands down the best carrying system I've used. (ok, not so much in the winter when wearing a coat).
$250 -ish
Manfrotto 055Pro Tripod legs.Heavy, but I love the height I get with them.