Also quite nice: a normal Arduino (not the mega) with Lora, but with a nice battery system built in.
https://www.aliexpress.com/item/LoRa-Radio-Node-v1-0-Based-on-Sx1278-LoRa-433Mhz-2-4G-RFM98-for-Arduino-ATmega328P/32855090628.html
Now if only they made an RFM69 version of that..