What actually makes a good diy lover gift for your brother?
Prioritize reliable hand tools, measuring gear, organization and consumables that support the work they already like doing. For this relationship, it is also worth checking the interests you know he will immediately recognize as “his thing”. Avoid low-quality tool bundles filled with pieces they will replace immediately; also skip generic sibling jokes that replace rather than support a real gift idea. If you are unsure between two options, the less flashy product that fits an existing habit is usually the stronger choice.
The strongest gift ideas usually come from the person’s real habits: what they already use, what they talk about and what would make an existing interest better.