Only Applicable to UK readers (sorry) but I noticed that Sainsburys Home
Base (Norwich, Norfolk) have some stainless steel globes in their gardening
section. Globes are £15 for one about a foot across and £20 for a larger 18
inch version. Quite a few of the balls on display had dents in them, so
perhaps a lower price could be negotiated :-)

Strikes me that these globes would make ideal anti corona/capacitance caps
for high power LF vertical antennas or perhaps a suitable cap for a Tesla
coil.

Previously I have seen dedicated suppliers charge £80-£100 for this sort of
stuff. Just thought this might be useful info especially if they are
available across the UK.

Mike G0ULI