Why not try working out some chord shapes for DADGAD from theory. So, for example, you know that the major triad for the chord of D is D, F# and A - apply that to the tuning and you'll get some varying and interesting fret positions. The major triad for the chord of G is G, B and D - some more fret positions. The major triad for A is A, C# and E - some more fret positions and - presto - you have the three chord trick in DADGAD.

You can also try DADF#AD - which is a little more forgiving for some chord shapes...