I needed to drive my mother to certain events in Canberra, and to make the best use of my time, I used the trip for nature photography and soil sampling.
Protip: Need to identify precise location in the National Arboretum? Identify a nearby plant, then enter plant name into https://nac.arboretumexplorer.org/, which has a list of every plant in the arboretum and their exact locations.
Also note that you need to apply ahead of time to sample soil from the National Arboretum, and you need supervision to sample soil from vineyards in the ACT to reduce risks of spreading Phylloxera.