We took four routes for sorting out our household. We knew 6 months out we would be leaving the states.
Ebay: For very specific, htf buyers. Mostly this was darkroom/photography equipment.
Craigslist: Bulky or high value items like vehicles, furniture, computers, electronics, tools, etc.
Free: Items that friends didn't want were sorted out into boxes, a free sign was placed on them and set outside on the curb. Placed an ad on craigslist stating the address. Everything was gone by that night.
Storage: 15% of household (photos, irreplaceables, etc)
We packed 4 large suitcases and brought those here. Didn't need much once we got here since we found a furnished apartment.