Barry Kauler, the creator of Puppy Linux, may have retired from maintaining Puppy Linux a few years ago, but he appears to be still active, as he’s just released Quirky Linux 8.1 for Raspberry Pi 2 and Pi 3 boards, a lightweight Linux desktop distribution based on Ubuntu Xenial Xerus 16.04, and including LibreOffice & Inkscape to have the same out of the box experience as Raspbian, but with a 360 MB download size instead of 1.3 GB for Raspbian. A build for ODROID-XU4 development board should also be coming soon.
The image has been designed for 8GB micro SD card, and needs to extracted and dumped onto the card with the usual Win32DiskImager or dd tools. There are three mirrors for quirky-pi2-sd-8gb-xerus-8.1.img.xz firmware: iBiblio.org, nluug.nl, and archive.org.
Thanks to Mary for the tip.