There are lots of local craftspeople who make beautiful things that are not tat but genuine keepsakes and I would like as a present.
I particularly like island art/craft studios in peoples homes where meeting the crafts person is part of the experience. The small traditional houses and the beaches etc are so beautiful. There are many Scottish jewellery makers too who make beautiful things.
I like the mini (6”) paintings of windswept landscapes and wild flowers, stained glass, hand blown glass bowls, stunning photos of places like Glencoe, which can be so bleak, or the Harry Potter viaduct (you can do a steam train ride over that).
Hire a car and travel, and read up about the history of any places you are interested in so you can see if anything catches your eye and you can tell people the story behind it.
If you trace your ancestors back to Scotland prior (popular just now for those in lockdown staying in more) or have a Scottish surname you can look up something about your clan. It will have its own tartan. I personally love tartan so I don’t think it’s tat but some people hate it. I’d personally get something tartan but not from a tat shop!
If you want a kilt they are very expensive £350 upwards as handmade and made to measure is available so allow time for that)) but hire shops sometimes sell ex hires if they change their kilt ranges, which will be clean, cheaper and look/feel the part.
If you are going to the island of Harris pick up something Harris tweed. (Book any bookable ferries as soon as the dates are released for booking ahead as they will be booked up in days for many months ahead by U.K. staycationers) I’d get a Harris tweed purse or handbag. I also like Ness handbags but you can buy them anywhere, they arent island specific.
Basically read history info and do research first and see what jumps out at you. There’s something for everyone.
Enjoy your holiday but we are still in full lockdown here and don’t expect to be back to anything like normality for a few months yet, so I’d suggest come a bit later in the year.