Jules coughed up some electrons that declared:

On Sat, 25 Jul 2009 11:15:10 +0100, The Natural Philosopher wrote:
I buy packs of premade oak plugs meself.

My local BM carries them. They are available online too.

Mine does too, but they're all cut in one plane, so it depends on the job
as to how well they blend in with the finished piece - DIY with a cutting
tool would allow a bit more selection as to cut and source material.

Plus I have lots of offcuts so matching is assured