Publish experimental data
There are two types of data repositories: generic and subject specific. Check what repository may be used by your discipline, and see if it meets your requirements. re3data.org allows you to find an appropriate repository to access and deposit research data (https://www.re3data.org/). There is also a number of generic repositories: Dryad (as mentioned in a previous comment), Figshare, etc. Often they will assign DOIs for your content and will allow you to pick an appropriate license. I would advocate for CC-BY, CC0, or CC-BY-SA. Those are least restrictive and allow others to build on your work.