Do you have a Peloton? Would you like to add more versatility to it? Say hello to the Data Fitness Connector (aka the DFC). This small piece of tech connects to your Peloton and will broadcast your bike metrics to Zwift and other training apps. I have only used it with Zwift but I know it works with smart watches and an assortment of fitness apps.
I bought it in September and am selling it for half of what I paid for it.
Check out the details here: https://www.crowdsupply.com/intelligenate/data-fitness-connector