Doing an electronics project where space comes at a premium? A regular rpi pico is to large? Have a look at the XIAO-RP2040 from Seeed Studio.
Top 5 Alternatives to Raspberry Pi Pico
Finally! Animated Eyes using Seed Xiao RP2040 - Share Project - PCBWay
Multi sensor device packed with Raspberry Pi RP2040 chip
ANAVI Macro Pad 12 & Arrows - The Perfect Match: Exploring the XIAO RP2040's Harmony with Mechanical Keyboards
RP2040-Zero-M, a Pico-like MCU Board Based on Raspberry Pi MCU RP2040, Mini ver. - AliExpress
How to use Seeed Studio XIAO in your PCB Design - Latest Open Tech From Seeed
Raspberry Pi RP2040: Features, Boards, Projects - Latest Open Tech From Seeed
SMALLER than the Raspberry Pi Pico! - XIAO RP2040
Top 5 Alternatives to Raspberry Pi Pico
Olimex Teases the RP2040-PICO30, a Raspberry Pi Pico Alternative with 30 GPIO Pins Exposed
Raspberry Pi RP2040: Features, Boards, Projects - Latest Open Tech From Seeed
Top 5 Alternatives to Raspberry Pi Pico
Programing in Rust the XIAO RP2040 board