When my kids were kids it really depended on if they needed anything big. One year we would get them a macbook because they needed a new laptop for school but then it would last nearly five years so I wouldn’t have to buy another one for ages. Same for things like phones or consoles or. I always spent more on these big purchases as they normally last longer.

Now they adults I spend a few hundred for birthdays and Christmas. I like to get something they will actually use, will last, and is memorable. The best gifts show that you actually pay attention to their current hobbies or are something they would want but would rare splash for. Example would be for my sons birthday i got him a GBA SP style emulator and loaded it up with pokemon roms, official and fan, as I knew he had a few months off studying for his professional qualification.