Coolant Pipes:
https://www.amazon.co.uk/gp/product/B008O14864/

Crocodile Clips:
https://www.aliexpress.com/item/10PCS-Crocodile-Clips-Insulated-Plastic-Handle-Cable-Screw-Fixing-Power-Terminals-Electrical-Tools/32723865444.html

Mini Clamp:
http://www.wilko.com/all-hand-tools/wilko-clamp-34in/invt/0343373

Instead of buying the mini clamp you could also print this G-Clamp and it fits nicely: https://www.thingiverse.com/thing:1673030

I also have an instructables with some more detail here: https://www.instructables.com/id/Coolant-Pipe-Helping-Hands/