Buying gifts for musicians can be a nightmare, if only for the single fact you just never know what they may need or want. What makes the decision even more difficult is that you don’t want to break the bank, but at the same time, you don’t want to buy something too cheap for fear of dealing with terrible quality.
Here is a basic link to follow that really amounts to a general Google search for musical instrument establishments in the Dallas area. If anything, this may take you in at least a better direction that walking aimlessly in a music store without a clue. Keep in mind that some of the establishments mentioned do not have websites.