Take a list of sites, for example Alexa top 10,000 and make an automatic script that browse these sites and collect whatever information you need. Have a bunch

Take a list of sites, for example Alexa top 10,000 and make an automatic script that browse these sites and collect whatever information you need. Have a bunch of devices, phones, laptops, PC's from different brands doing this. This will not cost much and you don't have to spy on your users.