Glad I had a look at the Stonebrothers link first because I was going to suggest the same thing;
I got a Sidchrome tool cabinet similar to the one above from my parents for my 21st and it's now on the wall in my own garage and gets use almost every week for one purpose or another. It's been delivery good value now for the past 23 years as I'm almost 44 (actually on the day after your sons birthday ;) ) and it shows very little sign of wearing out.
A great gift idea if he's into using his hands
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