Today’s invention is a telescopic inner shaft for an umbrella.
When it’s raining and you are stuck outside for a while, watching some match, for example, this extra shaft can be extended downwards from inside the normal umbrella handle and locked at a convenient length.
This acts as a monopod to take the weight of the brolly, so that one’s arm doesn’t get fatigued.
The lower end of the shaft could have a point, a turf screw or even a small fold-out tripod so that it stands securely anchored.