As the holiday break approaches and you begin to wonder what you’ll do with your days off, consider taking a look at the Mashable Invites page. There you will find beta invites to hundreds of Internet start-up companies. You will have to sift through the list to find things that are useful for education, but there is good stuff in there. The Mashable Invites page is where I first gained access to the Dipity Timeline service. Or, if you’re just curious about what’s happening in the way of new Internet companies, take a look at the list. Finally, even if you don’t find something you like, you’ll at least feel like a cool “Internet insider” after reading Mashable.