Another gift idea would be the BPI-UNO32.
BPI-UNO32 is equipped with the ESP-WROOM-32 from Espressif Systems as MCU. ESP32 is a single-chip solution with 2.4 GHz WLAN and Bluetooth connectivity. TSMC’s 40-nanometer technology has excellent values in terms of power consumption, RF performance, stability, versatility and reliability. It is therefore suitable for a wide range of application scenarios.
This Banana Pi has two separately controlled CPU cores, the main frequency can be up to 240 MHz, 448 KB ROM and 520 KB SRAM.
The size is the same as the Arduino UNO R3.
The BPI-UNO32 can be supplied with power via microUSB or a 5.5 mm DC power adapter and has an automatic switching circuit.