A very familiar-shaped development board featuring a number of Mike's smol boards. RP2040smol provides microcontroller magic, while AP62250smol and optionally Charjsmol have the power supply covered.
MegaTinyProg (Design in Progress)
This is a USB-C to UPDI programmer with 12V programming pulse designed for programming ATTiny817 and friends. It also features FE1.1 USB hub and MCP2221a onboard to facillitate simultaneous debug and programming, as well as simplifying development of ATTiny as an I2C peripheral.