https://www.google.com.au/maps/@-34.9710689,138.7320789,16z
From Bridgewater, go towards the city, at Crafers turn north. There's the Mount Lofty botanic gardens, very picturesque (mostly in autumn with colour film, but still good most of the year).
Keep going north from there to piccadilly, some of my favourite spots are there. First shot is from Gores Road looking East, next is Swamp rd looking west. Also, (there was a url link here which no longer exists) lot of ruins is on Swamp rd.
(anyone from the recent print swap might recognise this, it's a lot better on the print with burned in sky than the scan).
Or go south from Stirling to find Scott Creek conservation park, an old silver mine with native ground orchids if flowers are your thing (I can never remember what time of the year they flower though).
Or northeast of bridgewater for half an hour and get to Lobethal. Nice town in itself, but a bit north of that is Lobethal Bushland park, one of the last remaining bits of completely untouched scrub from 200+ years ago.
And don't forget to eat at the Bridgewater Mill (if you can afford it).