To build the heart model I will need material in different shades of red( I think instead of buying material, it is going to be more economical to buy red second-hand clothes). On top of that, I will need a needle and red thread to sew materials together with wire. The thread needs to be strong to support the entire structure and not tear apart in the process. 1 x standing loudspeaker. I think I will purchase a couple of different kinds and see how they work. I am thinking of thick thread for DIY bracelets, normal red thread, Racing Red Hand Tying Butchers String, or Leather Waxed Thread.
And several dozen of wire, I don’t know exactly how much I would need but it’s better to have too much and not enough. I am planning to buy 100m first, see physically how long it is, and make an assumption if it is enough or not. When it comes to wire, for me the most important is that It needs to be super extensible and resistant to breakage. Therefore I think the best will be jewelery wire, which naturally is used for bending and crafting.