A basic dev board for the ATmega8515 in TQFP44, has ISP header, serial header, a place for a crystal, and an LED (of course!).
Successfully uploaded a classic "blinky LED" program to the ATmega8515 on the board using my probUSBis_a1 board as an AVR ISP programmer using the littlewire firmware. I also wrote a small "Hello, World!" serial test program.
Here is the board connected to a scavenged FT232BL board for USB to serial communication. With a blinky LED for debugging.