Most of the symbols, icons, cliparts for elders are with walking stick, which I feel irrelevant. This will discourage & demotivate elders to depend on sticks.
I see many elders without walking sticks; they will walk easily even after 70s & 80s. Elders age is starting at 60; but the need of stick may come to someone after 80 or 90, depends on their physical condition. Certain percentage of users only will use walking stick, I assume it will be around 20%. Keeping a symbol with stick for all elders will not suit.
Better we can think some other icon for elders, which should be with cheer & celebration. I suggest United Nations to conduct an icon contest at global level to decide by online voting.