would any of these do? https://www.huset.com.au/home-furniture/dining/bar-stools

Agree with the majority... use hearty plants , that love the dry hot conditions... don't worry you have plenty of choices and colours so there will be colour ! A good organic soil that has been turned well! Plenty of good water between days that at hot... But most of all , your mulch is the key factor here if you don't use a good one , all will end and quickly ... some mulch tend to disappear quickly , some seperate in large water drenching . Because you are on the slope maybe try running Hardwood timber palings from end to end in around 3 sections to stop the mulching sliding . And my choice of mulch Hardwood Chip , not mulch but chip lasts for a bloody long time ! I'm a cabinet maker via trade but love green thumbing

Happy Easter to you as well, I would try your local second hand building material yard, old doors etc, they quite often have bits and pieces. Elraco is an online store in Sth Australia, excellent to deal with https://elraco.com.au/index.php/escutcheons-c-28_1288_1294?page=2&sort=2a

I assume this is the photo that you have referenced. I googled yellow subway tiles Australia, and came up with these. The website is showing yellow tile with dark grout, but I think it is a similar hand made yellow subway tile, as the one in the overseas photo with white grout.