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2.
A bag of toiletries, sewing, letter writng and sundry other goods that you get overcharged for in bootcamp.
Smitty climbed the Washington monument with a scoped 30-'06 and started taking out supply corp officers while muttering about being ripped off for $12.50 back in 1961.
by harry flashman July 10, 2003
 
1.
A small bag that contains various odds and ends such as a mirror, flashlight, glue, paper clips, rubber bands, twine, shoe string, bandaids, and tape. The bag is usually taken on a trip, particularly camping, where it can be used for a variety of purposes.
Joe: Oh no, the car won't start.
MacGyver: It's the ignition. I'll use the batteries from the flashlight in my Ditty Bag to start it.

Joe: Oh no, my luggage won't stay together.
MacGyver: Use one of the zip ties in my Ditty Bag to hold it together.

Joe: Oh no, I have a head ache.
MacGyver: I'll give you some of the asprin from my Ditty Bag.

Joe: Oh no, my space suit is leaking.
MacGyver: I'll plug the whole with some of the silly puddy from my Ditty Bag.
by Joe Plumb August 02, 2005
 
3.
it's your shit.. as in, all of it..
it implies leaving/moving.

it's true that there are small bags that are used to hold things.. but generally when people say 'I'm gonna pack up my ditty bag" they're not being literal - it's slang for leaving.
'he gives me anymore lip and i'm gonna pack up my ditty bag!'
by koe August 23, 2006