1.  Ziploc Bags -- They are Male, because they hold everything in, but you can see right through them.
2.  Copiers -- They are Female, because once turned off, it takes a while to warm them up again.  It's an effective reproductive device if the  right buttons are pushed, but can wreak havoc if the wrong buttons are pushed.
3.  Tire -- Male, because it goes bald and it's often over-inflated.
4.  Hot Air Balloon -- Male, because, to get it to go anywhere, you have to light a fire under it, and of course, there's the hot air part.
5.  Sponges -- Female, because they're soft, squeezable, and retain water.
6.  Web Page -- Female, because it's always getting hit on.
7.  Subway -- Male, because it uses the same old lines to pick people up.
8.  Hourglass -- Female, because over time, the weight shifts to the bottom.
9.  Hammer -- Male, because it hasn't changed much over the last 5,000 years, but it's handy to have around.
10.  Remote Control -- Female......  Ha!  You thought it'd be male.  But consider this -- it gives a man pleasure, he'd be lost without it, and  while he doesn't always know the right buttons to push, he keeps trying