This extension picks a random XKCD comic and its hovertext and displays it on your new tab page in Chrome.
To use it, add it to Chrome here:
https://chrome.google.com/webstore/detail/xkcd-new-tab/kbndmginnhajgnjcncdepimedpgielff
Here's a preview of what the extension looks like:
Have fun and feel free to reach out to me if you have any questions!