I have 33 working iPods:
Ordered by serial, generation and date of purchase.
3rd Gen:
JQ407***PNT - 20GB, purchased January 2015.
2X507***PNU - 40GB, purchased March 2016 (everyday use and dock)
JQ416***QQF - 15GB, purchased July 2016 (using a 20GB HDD)
Q2921***PNU - 40GB, purchased November 2016 (everyday use and dock)
JQ409***QQF - 15GB, purchased February 2017.
JQ411***PNU - 40GB, purchased March 2017.
U2326***NLY - 30GB, purchased April 2017.
JQ409***PNU - 40GB, purchased April 2017.
Mini:
YM525***S41 - 6GB gray 2nd gen, purchased November 2014.
JQ549***QKJ - 4GB green 1st gen (Refurb?), purchased September 2016.
JQ424***QKL - 4GB blue 1st gen, received it as an exchange January 2017.
4G/Photo/Color:
JQ539***TDS - 20GB Color, purchased February 2014.
4U538***TDS - 20GB Color, purchased July 2014 (Engraved on the back)
JQ445***R5R - 60GB Photo, purchased December 2014.
4U531***TDS - 20GB Color, purchased February 2015.
2CD434***3 - 40GB HP, received as part of an exchange April 2015.
JQ448***S2X - 20GB U2, purchased June 2016.
JQ447***R5Q - 40GB Photo, purchased July 2016.
JQ537***SB1 - 60GB Color, purchased September 2016.
JQ535***TDS - 20GB Color, purchased September 2016.
JQ442***PS9 20GB, purchased October 2016.
Shuffle:
CNH532***2 - 512MB HP 1st gen, purchased February 2015.
Nano:
6U538***TJT - 2GB black 1st gen, purchased July 2016.
5G:
JQ548***SZ9 - 30GB white, purchased December 2013 (docked)
4W546***SZ9 - 30GB white, purchased March 2014 (using a 60GB hard drive)
4U543***SZ9 - 30GB white, purchased July 2014.
4J545***TXL - 60GB black, purchased September 2014.
JQ542***SZA - 60GB white, purchased April 2015.
4U547***SZ9 - 30GB white, purchased June 2015.
4W547***TXK - 30GB black, purchased January 2016.
4V547***TXK - 30GB black, purchased October 2016 (docked)
4U608***TXK - 30GB black, purchased March 2017.
Touch:
9C747***W4N - 8GB 1st gen black, received as part of an exchange June 2017.
6.5G:
8K202***9ZU - 160GB black, purchased new May 2012 (docked)
I also have these ones:
U2239***MMF - 2nd gen 20GB, purchased June 2017 (Faulty HDD and battery)
JQ524***SAY - 4th gen 30GB, purchased January 2014 (faulty hard drive)
7J535***SZB - 2GB 1st gen Nano, purchased July 2016 (faulty battery)
JQ544***SZA - 60GB 5th gen, purchased October 2014. (The logic board works only by charging it through FireWire, used for testing)
1B012***75J - 8GB 3rd gen Touch, purchased December 2014 (cracked screen, battery doesn't seem to work)
8K131***9ZS - 160GB 6.5 gen gray, purchased June 2013. (Faulty hard drive)
Some of them came with original boxes, earphones, docks, etc...
I have other iPods besides those listed above but I use them mainly for spares.
I also have had other iPods which gave as a gift, sold or were stolen from me.
Greetings from Venezuela,
Eduardo.