Some of these have been touched on before:
regular fridge/freezer
freeze drying
irradiation (works for veg, probably would for meat too)
vacuum packing (used to preserve sandeels for bait in the UK - check out ebay.co.uk)
tinning (obvious - e.g. in oil, water or brine)
pickled in alcohol (rather than vinegar)
preserved in aspic/jelly?
Feed it to another animal (e.g. chickens) then eat that animal at a later date
Use it as fertilizer (like the Russians used to do) & then eat the veg. later
