It is possible to fit a 3 pin plug to anabaric string. In dayz gone by we were all taught how to at skool so not specifically Kim level skillz, tho' the reason for moulded plugs becoming a 'thing' is that results were 'variable'. Buying a rewirable plug and 3 Amp fuse may not be so easy these days. Can sent you one or two for the postage cost.
People actually *pay* for plugs? I have a box of such things rescued from condemned appliances (and plenty of kettle leads that could have the IEC end removed
[1] if you need bare wires). A couple of weeks ago I actually used one for something.
(Do they still teach you how to wire a plug at school? Shortly after my day they'd gone full health & safety, with special plugs with vandalised earth pins that wouldn't fit in sockets, the trailing end of the cable neatly terminated with heat-shrink, and the classroom's circuit breakers all firmly in the 'off' position for the duration of the lesson. This was probably a result of $physics_teacher previously demonstrating the principle of RCDs by giving himself an electric shock from the only socket in the room not protected by an RCD...)
[1] About half the time what happens is you strip the wire, bin it in disgust at the feeble amount of copper found within, and grab another from the power cables box kettle lead breeding programme.