[Joint Venture II]

Been following this forum for a few months and as we are on a 4 1/2 month trip around the country visiting kids and grandkids I have been thinking of crucial spare parts I might consider carrying. Parked at my daughter's home I needed to raise the front of the Monty about 12" to get level. I noticed the motor got pretty warm and got me to thinking about a spare. Are there any particular "spares" that is wise to carry? My thinking comes from many years of cruising in our boat on the Inside Passage of the BC coast where spare parts can be very crucial to have aboard. Presently I carry a spare fresh water pump but nothing else other then misc. screws, bolts, tapes and bulbs. Any thoughts here?