What gift should I give my friend who is doing interior design?

1: If your friend can draw designs by hand, please buy a pen for TA.

The German Duke's artistic pen is a good choice. I'm using it now, and it feels good.

2. If you are a friend who designs renderings, please buy a finished product atlas of foreign interior masters and send it to TA(300~700 yuan).

This is not recommended, it varies from person to person.

3: If you are TA's boyfriend and girlfriend, please cook a bowl of delicious soup in the kitchen next time.

Good soup is more intimate than buying something to send TA.

Or take a photo of you together and his single photo as a souvenir booklet, which is also quite creative and can be used for browsing in the future.