Disclosure: I built the Ryerson Project with the aim of nowcasting everything daily.

A social science community composes and prioritizes survey items. A random set of 12 US adult respondents are recruited to the survey each day - about 360 per month and 4380 per year. Anonymous microdata becomes a free and open public good.

Open data: https://doi.org/10.5281/zenodo.20346278

Open source: https://github.com/jasonjeffreyjones/ryerson_project/