"Toiletries, things for personal hygiene and the like. Probably a mirror pair, for easy communication - nothing fancy, just something small. Oh, and if the cafeteria doesn't serve tea, I'd like some," he says, looking at the buildings curiously. They're much, much taller than he's used to, but he doesn't comment. "For non-necessities I'd like to pay you back in the future, after I've started making portals. It seems wrong otherwise."
"The shops I've seen at home weren't named that uncreatively, they just lean towards what they do in the name. For example, there's a clothing and tailoring shop that's called Snips and Stiches. I don't think that pun translated, but it's... Clever, in my language," he explains. "That kind of thing."
They reach the clothes store, the function of which is somewhat more obvious when they're close enough to see through the glass storefront. "Okay, tell me what kind of things you like, is what you're wearing a good place to start or was it - I don't know, something your grandmother bought you that you had to wear because she was going to visit?"
Shopping trip for clothes ensues. Clothes are picked out, and then bought. It's all very exciting and the two of them will probably be able to shop reasonably well together. Korulen knows fashion in Elcenia better than Adarin would, but of course he has a good idea of his own taste.
The end result is a modest wardrobe, with culture-appropriate looking clothes. Adarin tends towards the practical in basic clothing, but likes somewhat fancier jackets. These kinds of things are bought, though he does very obviously avoid bankrupting Korulen. He can always come back later and buy more things once his portal-empire has taken root.
Soon enough, clothes shopping would be finished. A sense of accomplishment is felt by all.
Sheets and toiletries are bought. The sense of accomplishment would strengthen, along with the load of things they're carrying.
And then they locate his pair of mirrors, and then they go to a grocery store where there is a variety of tea to select from. (The same store will also supply a 'hot waterspout', which will conjure water when twisted open in a state of hot, rather than water in a state of cold, as is typical for waterspouts. This water can be used to make tea.)
He is quietly making plans of buying fifty waterspouts and then making even more money back home with them. He's not even sure what he'd even do with all of this potential money, but he's certain he'll think of something. Eventually. As soon as he's stopped being incredibly charmed by self-heating water conjurers.
Them heading back to the school occurs. On the way back, Adarin asks for an explanation of how dragons work, in more depth. He's curious.
"It can be any species. Well, any single species - most dragons can't turn into half-human half-elves. But it can't be any number of things. They pick things permanently. For most dragons they get five learned shapes after their natural form and they don't get to pick exactly what it looks like, except it's predictable in some ways - Mom in human form looks exactly like Grandma in human form, for instance."
It comes as a relief to hear that not all dragons could break his mind easily. Not much of one in that there is someone in the world that could break his mind, and he knows her personally, but every little thing counts.