What best describes supply class VI items?

Supply class VI items are best described as personal demand items. This classification includes items that are generally not required for the normal mission of the armed forces but are nevertheless desired by individual personnel for personal use. These items encompass various personal effects that service members may request or need beyond standard military equipment.

The classification differentiates personal demand items from other types of supplies, which serve direct operational or strategic purposes. For instance, major end items typically refer to significant equipment that contributes directly to military operations, while construction materials are related to infrastructure and repairs. Medical supplies, on the other hand, are essential for maintaining the health of personnel but are not considered personal demand items. Therefore, personal demand items accurately reflect the category discussed in the question.