Float fishing is a very effective technique for catching carp. There are a large variety of floats used made mostly in Europe and Asia. Most tend to be elongated. They are usually not available in your average multi species tackle shop. So I made a couple up from some very common materials. They are simple and easy to make. You will need to find some of these reeds.
You pretty much see them everywhere.
Cut a straight section out of the reed. You can see the joints just like bamboo. You will also need some heavy thread, nail polish both clear and coloured, some bamboo skewers , some soft wire , some glue either epoxy or hot glue will do. You will also need something to drill out the reed at the joint so the bamboo will fit inside the reed. Even a small nail will do.
If you want to give float fishing for carp a try and these type of floats are not readily available you can make these up in one evening. There is no sanding or finishing involved except a good coating of nail polish..