My husband has a 30 foot cabin cruiser he takes out deep sea fishing.  For our anniversary, I got him a cell phone repeater to help boost his cell phone signal when he’s out on his boat.  If he goes out very far off the coast, his cell phone won’t work but with this, he can keep a signal a lot farther out.  I just feel a lot safer knowing I can reach him if I need him or if he’s out a little longer than I expected.