I can 3D print Wire Winders which are ideal for lightweight QRP portable operation. I have attached a photos of the type that I recommend. The standard size is 250mm overall but I can make them smaller if required. The 250mm version weighs approx 30g.
The best wire to use is the really thin stuff, ( #534) from thewireman.com He is used to posting to NZ.
Steal a bit of knicker elastic to hold the wire on and you are away.
https://www.youtube.com/watch?v=o8RoYrmr8o8 shows them (about the 8 minute mark,) and a 1:1 balun, which can also be made.
These are printed in PLA which is fine for portable operation, but probably won't last forever if used in a permanent role. Some things that I have printed and left outside are still looking great more than a year down the track. Any random colour except brown or green, so that you can find them at a field deployment site.
Provided you wind on your wire in a figure 8 pattern, the great thing with these winders is that when you come to deploy the wire, you simply secure the loose end to the balun/unun or dipole centre piece, hold the winder through the round hole, and walk away letting the wire wobble off cleanly.
The biggest cost is the postage, which is $6 for an NZ Post bag. I can get six winders in the bag easily. These winders are priced at NZ$2.50 each which is basically covering costs.
Also, if you find something else on thingiverse.com that you'd like printed, email me.My email is firstname.lastname@example.org