I use a 1mm copper wire that I found on amazon just like this: copper wire
To bend the wires I use fine tip pliers and my fingers because copper is very maluable
Thank you! I use a wire like this: https://www.amazon.com/-/es/Artistic-Alambre-desnudo-calibre-0-039/dp/B004BN7JGK/ref=sr_1_5?__mk_es_US=%C3%85M%C3%85%C5%BD%C3%95%C3%91&crid=2W4N9I3WYKLRR&keywords=1mm%2Bcopper%2Bwire&qid=1654091672&sprefix=copper%2Bwire%2B1mm%2Caps%2C195&sr=8-5&th=1