You could also find out where your mom and dad courted each other and go there. It will be an excellent and memorable gift for your mother.
If she has a religious bent of mind, something related to religion and God will make a wonderful gift. If she is into fitness, then you can gift her some fitness related gifts like books or the latest gym equipment.
Take time off on Mother's Day to teach your mother how to use the Internet. Communicating on the Internet is easy and can be taught by anyone who has used it. Therefore, if you teach her about emails and video chats, not only will it add to her knowledge, but you will also be able to spend quality time with her.