Of a fairly thin batch of candidates (lots of shorts, clickbait amplifier circuits, and vague "build cool stuff" videos), this is the one that actually teaches a concrete, replicable project with several distinct learning concepts bundled together.

The electronic dice build is a classic beginner Arduino project because it touches on so many fundamentals in one small package. You get digital input handling via the push button (with the inevitable debouncing question), pseudo-random number generation using random() seeded properly so you don't get the same sequence on every reset, and 7-segment display driving — either directly through seven GPIO pins or via a decoder IC like the 74HC4511. Mapping the digits 1-6 to the correct segment patterns is a nice exercise in bit manipulation or lookup tables.

It's also a project where you can see the abstraction layers: the physical button → digital signal → software logic → visual output. For someone just past blink-an-LED, this is the right next step. If the host walks through the wiring and code rather than just showing a finished build, it's genuinely useful weekend material.

Note: this batch was weak overall — most other entries were shorts or clickbait-emoji "secret circuit" videos, so this won partly by default.