At one point the trackpad on my MacBook Pro (Late 2013) was freezing up, and since I was traveling I had to find a mouse in a hurry.
In Taiwan, 7-Eleven is basically your Starbucks, bank, supermarket, business center, Ticketmaster, and yes of course, convenience store all rolled into one. So it wasn't surprising that they also had a small collection of electronics. I purchased the Buffalo "Like a Bean" Blue LED Mouse here and despite the color was able to get me out of my jam, and back up and running.