There have been a few things us guys have kind of forgotten about in recent years. Simple things, cuff links, handkerchiefs, braces and a good suitcase/satchel. These were all a staple back in the day, and I think they should make a comeback.
Ties. Ties are probably the most annoying thing to get right and we usually just end up doing a half-arsed knot that looks horrific but gets the job done.