What items would you like to get the “Scar Essence” treatment?

Often times, many very useful items are acquired by ShopScape. I like what Jagex did with the Scar Essence mine. Basically turning excess GP into shopped tunes but at a drastically faster rate. Literally just a massive time saver from spam buying shop items.

My personal vote is Gold Ore. Buying 130K+ from blast mine is insanely boring.

So if you can give the treatment to an often shopped item, what would it be and why?