It would probably help you to break this down into sections, such as "The Jock" (workout gear, etc.), "The Geek" (computer stuff, board games, etc.), and "The Fan" (sports memorabilia, etc.). This would work, because most guys would fall into multiple categories and someone looking to buy gifts could just look at any number of sections.
Personally, some things I would like right now (or have recently received) are a RaspberryPi (small computer), a new iPod armband, and hiking boots.
adding to phriot some are crazy about cars ... so you could have a section about cars ... they would not mind a detailing voucher for their car or something on those lines.
Gadgets too ... you can lookup some sites that sell nothing but gadgets... there is one with the slogan "stuff you don't need, but really, really want"... i don't remember the name of the site but it had a lot of different items.
When looking for information on a hub topic it is good to make sure that the information is accurate and that you have done your homework because there is nothing worse than reading an article that has false...