Donate Online Donate to Rung, Ltd. with your credit card. Just click on the Donate button below… Rung, Ltd. is a 501 (c)(3) charitable organization. Our Tax ID # is 27-1053515. Your donations may qualify as a charitable deduction for income tax purposes. Please consult with your tax adviser for details. Support Rung when you shop online! Do you love the convenience of Amazon.com as much as we do? You’ll love it even more when you shop at AmazonSmile. Amazon donates .5% of the purchase price to Rung, Ltd. Just bookmark the link and support us every time you shop! Thank you!