On offer here are my excess stock of 16 pin DIP headers, in lots of 8 pieces.

Over the years I've found these to be invaluable whilst prototyping. Their 0.3" width, 0.1" pin spacing means they plug into standard DIP sockets or breadboards. They are much tougher than plastic DIP headers, the pins are pressure fit and the same dimensions as DIP IC pins (so will not stress a breadboard). The fibreglass cuts with a hacksaw to make smaller carriers (eg. 8pin, 14pin).

I've mounted components on them to make pluggable modules and ribbon cable to make board interconnects.

They can hold frequency determining passives in a filter for pluggable response curves, or even hold a handbuilt double balanced diode RF mixer.

Supplied in a cut tube as New, old stock. I obtained these in Australia two decades back, though they were originally Made in the UK and originally retailed at over $10 each (!). Now they're not commonly available at any price.

Indeed they're some of the most versatile prototyping items I've found; however I have way more than I can foresee needing so perhaps you might find some useful?