how old?

and are they already living together?

the Greeks, Italians, Vietnamese, etc have it right. A newly wedded couple needs ca$h

(if nothing else - to pay for all the moochers who drank all their booze at the wedding)

28 yrs old, living together

so cash money is ok? how do you give it to them? red envelope?

brown paper bag...

I agree - go cash. Chances are they'll have most things already and would appreciate the kick-start towards something big

traditional weddings- they pin it to the wedding dress, but in a card would suffice methinks

Otherwise a gift voucher etc at dept store. DJs do a nice coin type thing