With the holidays fast approaching, a nice stocking stuffer sure to make your bearded warrior smile is a comb specifically designed for his facial creativity. Not only a practical gift for your hairy loved ones, but also a polite way to say... keep it clean & comb it. Note: This will also help you relax into the conversation of when it is - and is not - appropriate to whip out the beard/'stache comb. Perfect example of combing excess & grooming fail: Example A.
Our trusted B-A-B staff put in one Google search of effort and discovered that a wide-tooth comb works best to remove bearded tangles, but feel free to follow it up with some brush strokes for total overall smoothness.
Additional suggestions are below - all which can be purchased: here.
The Show Off
The Basic 
The Wide-Tooth
The Morning Cup Mustache Stroker
Not Recommended For Use at Breakfast Table