Try splitting firearms and car audio hobbies. Both cost lots of $$$
Or splitting it with building hot rods, trucks and bikes. My gun money has to be rationed against:
1990 Jeep Commanche, stock (shop truck)
1984 Honda Interceptor 750, chopped & satin black
1987 Dodge Daytona Shelby Z 2.2, FM stage II .68AR, NP555
1983 Dodge Ramcharger, 5" & 35's (trail rig)
1978 Dodge Aspen Coupe, MSD'd and Quick Fueled'd 440, built 727,
1969 Dodge Charger R/T, still awaiting Drivetrain
1966 Kaiser M35A2 6x6 w/w, restored, awaiting super singles
1951 Dodge D-100 pick-up, 390 HP 360, built 904, 4.11 Posi, etc.
You have to go in cycles when you have more than one expensive hobby. One year, I might be all about the guns. The next two may be few or no gun related purchases, everything going into the cars.