Tire chains are always the best option for snow/ice but other options will help somewhat in snow.
Your snow blower, if front mounted, is, no doubt, unloading your rear tires so rear ballast, especially behind the rear wheels, e.g., ballast box, will help.
Folks who install wheel spacers rarely, if ever, install/remove such seasonally. Put them on and leave them on. Unless the wheel spacing of your rear tires is adjustable, you will likely need wheel spacers to mount tire chains.
If your driveway is paved, choose the proper type of tire chains to minimize the likelyhood of pavement damage. Go to tirechains.com and read up.