Printing from Windows and Android on a "classic printer" attached to USB on Ubuntu

I use a ten-year-old computer running Ubuntu 14.04 as a print server for the house, and it does a little bit of file-serving as well.  I don't want to burden it with any other heavy applications, because it can't take it.

It serves the printer using CUPS.

I gave it a static IP address (192.168.1.x) on the domestic network and then I could easily install it as the default printer for all the Linux and Windows machines we have.

The Android devices (phones and tablets) were more of a problem.  Google Cloud Print would work, but required me to run Chrome on the server, and Chrome is heavy. The solution I settled on was to use the app Let's Print Droid. This finds the CUPS server easily and sets itself up.  I can then 'share' in any app that allows that, and select Let's Print Droid.

Moving contacts from Blackberry

Blackberry phones allow you to copy contacts from SIM to phone, but when you want to go the other way you have to copy them one at a time. (This was fixed in recent BB's, BB10).  So how do you quickly get your contacts from an old BB to Android?

Solution: Use bluetooth.

I guess this might also work for other phone systems as well.