spare tire equipment
minimum equipment to change a deuce tire; 1 1/2" hex socket, 13/16" square socket (1 1/2" budd socket combines these), 3//4" breaker bar with long extension, hydraulic bottle jack, 2 jack stands (one for the axle, the other for the extension), piece of steel pipe (cheater bar for breaker bar) 3' minimum, 5-7' better, a piece of 2x6" maybe 24" long (drive inner tire over this to remove outer tire, no jack required), can of PB blaster, wire brush to clean wheel before putting spare on.
Nice to have stuff; tire pressure gauge, some way to add air to tire (gladhand with hose and locking tire chuck (I have a CO2 tank with a regulator set up), air tools with appropriate fittings, a helper (aka soldier 2)
Note that this is just for replacing the flat with the spare. To actually fix the flat is another job altogether requiring some special tools and skills. With the availability of spare tires (sometimes as cheap as $100 per tire on the rim) throwing an extra tire/rim combo in the back is also a good idea.