I carry a small tool box and the assorted breaker bars and bottle jacks as well as a trailer aid. I have had two blow outs and never changed a tire. I called the road service I use which is Good Sam never had a complaint. I have jacked my fiver up to do maintenance. I think the $100 a year for a good road service is well worth it. They do more then just change tires. I also carry the patch tape to repair the rubber roof. I have scrapped enough trees in 30 years to know this stuff works better then tape. Also carry some silicone sealer it is great in a pinch. Things I have found useful is extra power cord and power cord adapters. Extra sewer hose and fittings as well as enough water hose and filters. A small compressor is nice also. There are so many more things you could include. There are list in this formal or just Google for the info. Enjoy and good luck