A nice understated comfy hawaiian style shirt with broad shorts
and a pair of slippers. (Daddies do appreciate hip comfy clothings
too.)
A new pillow/bolster set. Try those tempur ones.
A Boduin Travel Press Coffee Mug with a bag of Hawaiian Kona
Macadamia Coffee (he can bring to the office)
A packet of really high grade chinese tea leaves with chinese tea
Mug that comes with cover.
There is a flavour, which every tea leave sellers package
differently under different name. Its basically chinese tea, but
when drunk, has a aftertaste of ginseng at the back of the throat.
You might want to consider that since its fairly unique.
Nothing beats 3 bottles of Chilly Tiger Beers & a big plate of
Braised Innards & eggs at the kopitiam downstairs from the
HDB.