Lucky you CP, none of my collection is showing signs of being active or awake, im in high doubt that i'll get any blooms this year.
Must get around to building my greenhouse.

1st reminds me of Peniocereus serpentinus (spelling?)

At first i thought #1 was a stenocactus, but it looks like a very dehydrated Ferocactus, or maybe thelocactus?
Alot more water would be great for it.

The big clumping one is an Echinocereus, but i cant remember which one.

In Australia for under $50? I would have dropped anything else i was about to purchase just for that Would look perfect in my garden... wink wink.

Fantastic Darryl.
I was wondering if you had a full shot of the Neoporteria laniceps, i think i have the same un id'd plant that looks similar (like alot of the genus)

Defineatly P.Serpentinus

The second is Peniocereus serpentinus....... or something along those lines.

Not good, but atleast you got to keep the plant, i lost mine to rot a few weeks ago.

Cicada wing?

My 1st thought is extremely etiliotated new growth that hasnt been given enough light to grow into the proper shape..? no..?

M. Bombycina for the 1st?

Is it just me, or does it look like its got a bit of scale aswell?

Wow! Can i have her?
My mum lives in Melbourne........ Australia

Sorry that this is going to be no help but, its a vigorous growing Opuntia, its not gonna stay compact unless in a pot or you prune it back im guessing.

Although its an Elongata, your plant still shows signs that is was etilioated(hate spelling that word) and is now growing properly.