My Dymo LabelWriter 400
I love this little baby that sits on my desk and whirs out labels on my command. Normally I rail against single-purpose devices (especially the Baconeer and the Hotdogger, remember them?). However, my printer hates envelopes. I hate Avery label printing sheets when I only need a couple of dissimilar addresses. And occasionally people get excited and order CDs directly from me.
LabelWriter 400 is only too happy to comply. Thank you, Dymo.