Grad seeds is a set of options that you will work on after you complete your upgrade*. They are designed to match up with various career paths, so there should be one that's suitable for you. There's lots of flexibility in the programmes, and several of them give you the option of organising your own event. You even have the chance to apply for funding. All of these things will look great on your CV.
* For some of the seeds there may be information sessions etc that take place before your upgrade, so check this carefully.
Here are the Grad Seeds to choose from - click on the links for more information.