I got some french oak chips that came with my kit.
I'm thinking of soaking them in some red wine now in a baby food jar.
Just thought I would mention that supposedly bottle caps(and I'm assuming the lid on a baby food jar) lets in a very very very tiny amount of air with temp changes, so this might be more ideal to simulate the barrels breathing than a vacuum sealed bags.
You were also probably better off using the cubes than chips( i already have the chips so will use them). Cubes are supposed to be more complex and Oak flavor leeches in slower.