a file as a repository?

[Cybe R. Wizard]

Is it possible (ie how do I?) set a local file as a repository for some
debs DLed long ago?  I'd hate to re-DL them as I have them right here.
I prefer synaptic, if that makes any difference.

Cybe R. Wizard
-- 
Unofficial "Wizard of Odds," A.H.P.
Original PORG "Water Wizard," R.P.
"Wize(ned) Wizard," A.P.F-P-Y.
Barely Tolerated Wizard, A.J.L & A.A.L