We implemented Golioth's Bluetooth-to-Cloud connectivity on a battery pack on a commercial power drill. We not only monitored power usage of the drill, we also looked up the location of the most recent gateway we connected through and attached that to the drill's device record.
Sandra Capri, CTO of Ambient Sensors, writes about building a Bluetooth Mesh demo where a cellular-based Thingy91 unit acts as a bridge to the Golioth Cloud.
Turn your Bluetooth devices into a connected IoT fleet using Golioth. This post walks through the process of creating a Bluetooth to Cellular gateway and sending sensor data to the cloud.