International Day of Disabled Persons was established in 1992 by the U.N.!
Give back. Show these Disabled Persons that they are welcome in your establishment, around your brand, etc, by sponsoring them and actively promoting them today and beforehand. It doesn't hurt to give back to their community by giving them exposure.
Be kind. Given that we just got out of November, which is the month of giving, December is a month of holiday cheer. Be kind and remind everyone that just because you have a Disability (of any sort) doesn't mean you deserve to be alienated.
Show them how you can help. Explain how your brand makes their lives easier. Market to them, spend some time crafting a perfect ad using Wave.video to demonstrate the usefulness of your product.
Celebrate! After all, it is their day. Send a shout out, or a thank you for their perseverance.