I've been wondering the same thing myself. While I don't want to do the wrong thing, it would be good to have a little more clarity. We are not in complete lockdown so doing a bit of yardwork/shed work, particularly by yourself, should be ok I reckon. E.g. the building trades are still working.
Going on the examples recently, it seems you've got to have a valid reason and it needs to be a local destination.
I'm guessing if you're doing a bit at home and going to the nearest Bunnings, I think you should be alright. If you happen to be 40ks from home and you live in the burbs you've probably got a bit of explaining to do.
I suggest before you go out, think about what you would say if you were to be pulled up rather than trying to make something up on the spot. Using the examples of people that have been fined should give you guidance.
