This pouch of cosmetics, hair dye, and small props lets you create disguises that change your physical appearance. Proficiency with this kit lets you add your proficiency bonus to any ability checks you make to create a visual disguise.
RollQuest ships the D&D 2014 SRD as a content pack, on a 5e character sheet that does the maths - roll from the sheet and let the numbers work themselves out. Free to start.