Ask HN: Going to Taiwan electronics markets; what would you build?

Going to Taipei for New Year's and planning to load up at Guanghua Digital Plaza since I've heard Arduino clones are like $5 and sensors are dirt cheap. I've got a few project ideas (bird feeder cam, automated squirrel deterrent for my garden, some LED toys for the kids) but I'm curious what you all would stock up on if you had access to these prices.

Anyone been electronics shopping in Taiwan? What components are stupid cheap there that I should grab? Any weird/interesting stuff that's hard to find in the US?

I'm VERY beginner with Arduino/ESP32 but have been wanting to get into it. I like sensor-heavy projects. My kids (5-10) also love anything with lights that reacts to movement. What would you build if components were basically free?