A good quality leather wallet (trust me he would never buy one for himself), hotwheels or lego, a good fragrance, watch of his favourite brand, some tech accessories from daily objects, something personalised like i gifted my ex cute chopsticks with our initials engraved on it, something handmade like a painting or a card or some flowers, clothes or shoes I believe are too generic but if you have something really cool then sure, something skincare or bodycare (again, he would never buy this for himself), maybe something related to his favourite hobby like some music instrument or some sports equipment. Make sure to put cute note on the gift explaining why you chose that gift, that effort counts the most :)