Health care necklaces with health care functions, sun jars of the twelve zodiac signs, and life-like dolls are all fine. Or give him a military badge with his own name, a pendant, etc., which is also unique and generous.
Men's agate engraved bracelet, engraved with his name is unique and exclusive. Agate has a shiny and soft appearance, but a hard texture. It can bring endless courage and strength to people and is also known as the "stone of courage". It will definitely be confusing and stressful when you first step into society. Placing agate under the pillow can also help you sleep peacefully, eliminate stress and fatigue. It is so cost-effective to give such a gift to your son.
Give him a suit. After graduation, everything depends on himself, and he must become more mature and more confident in facing the unknown. Wearing a suit will make you feel grown up, and growing up means responsibility. Let him always remind himself of what he needs to bear and face the future more bravely.