I use a single point cane to help insure against falls from loss of balance. The cost of a cane is pretty cheap insurance to help guard against broken bones, etc. from falls. Look for a cane with the wrist strap that allows you to release the cane when using a handrail on stairs or steps. The cane is good but most handrails are better.
Powered Shopping Carts
If prolonged standing or walking is a problem, don't hesitate to use the electric shopping carts when available. You can control the speed, so go slowly until you feel confident with your driving ability.