For a couple of years, I’ve been sampling wireless presenter tools (“clickers”) without buying. Colleagues have loaned me theirs. The writing program officer also keeps a couple on hand, and I’ve been a heavy borrower.

a tool, not a toy: the Logitech R400

Recently, after trying and loving the Logitech R400, I made a commitment and bought one. And on its inaugural day, I felt so prepared, so completely supplied with technological accessories — laptop, power cord, VGA adapter, USB drive, wireless presenter — that I forgot to pack my bag with something I need even more than I do the digital: a juice box.

Read about my want of a quick carbohydrate, and how it almost brought down my lecture, here.