Valuable jewelry, furs, silver, irreplaceable photos, auto ownership records, insurance policies, medical and dental records and other special documents, coin or stamp collections are best transported by yourself. Do not pack anything that could possibly leak, explode or be a fire hazard. Discard all aerosol cans, old cans of paint, leach, alcohol, cleaning fluid, etc. Do not transport ammunition, fireworks, matches or chemistry sets. Transport houseplants in the family car or they may suffer from lack of water and light and probable temperature changes.
Some states prohibit entry of certain plants.
Better yet, give them to friends or donate them to a hospital. Do not pack perishable foods. The movers expect payment as soon as they arrive.