Adding 1 skill point in 5e

Edward Beckwith

 So my DM has granted me a +1 to any chosen skill, and under 3.5 it would have been straightforward, just increase the skill. but in 5.0 I don't see a simple way to do this. I imagine a custom template or even a "magic item" with the property would do, but I'm not really sure how to do that. 

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