do you have wifi router at the house? if so, that's the way i'd probably go. that way can use various wifi spots when travel.
course, some hotels have jacks for wired, rather than wifi, which makes it fun when traveling. I find myself dragging along cat-5 cable, wireless adapter, and cellular internet adapter. Sooo much fun making sure i have all the right parts *ugh!*
i'll dig through some of my misc computer hardware I have laying around, but I dont think i have any spare adapters.