Inspired by: https://twitter.com/haysstanford/status/1306209477226569729
Visit your GH profile page and paste this in the JS console. Last (long) line adds several badges (if some appear duplicate with the ones you already have, use inspector to delete them):
document.querySelectorAll(".f4.text-normal.mb-2")[1].innerHTML="1"+Math.round(Math.random()*10000).toLocaleString()+" contributions in the last year"