These are a couple of post-Christmas items that would be wonderful in Mistress' cabinet. The first item kills two birds with one stone. It is called the Cock Lock Intruder. Mistress can shove the bulb part of the intruder in your ass and the cock ring can keep Her cock up and at attention. It can be found over at Extremerestraints.com.
Another great item that every Domme needs is a St. Andrew's Cross. It is the perfect tool to immobilize Their sub and have them easily accessible. The biggest caveat is having a place to store and use one. i figure O/our next house needs to have a basement.
Here's hoping all the Dommes out there got what They wanted this Christmas.