We take an empty suitcase with us.
Luggage is great value (so you can buy your spare suitcase there!
I always buy:
Secret Scent Expressions gel deodorant
M&Ms (almond, peanut butter and other flavours)
Paige jeans (usually go to a discount mall)
Sometimes Levi's (again outlets)
Trainers (especially Nike)
VS Bras and pants
J Crew/Gap/Old Navy. I think the selection is better, prices are better (even the sales!), and quality better than what is sold here.
Make up - I go to Ulta usually
Bounce tumble drier sheets - love the scent.
Electronics - will often upgrade an Apple product as necessary. Bought our first Apple products out there.
Abercrombie stuff.
Ugg's.
Have also picked up cake mixes in the past, different Pop Tarts flavours, different popcorn flavours, handbags (Coach or Kate Spade), sunglasses. Basically any bargains or things that I like the look of that are a bit different. A decent outlet mall can be an amazing find.
Pre-Covid we didn't really buy many clothes in the UK, we'd just stock up in the US - the quality of the cotton was always far superior at the same price point.
Not sure when we'll get back now, really miss it. Normally go at Easter, but won't be able to do this year or next as DC will be doing GCSEs and A Levels.