The humble hammer cannot be said to be in short supply can it; why then is it impossible to source a sickle anywhere for love or money? Nor a scythe for that matter.
That's surely because they've largely gone out of common use, although www.google.co.uk/#q=scythe gives information on how to source them and even includes an entry for a society. Sickle cell anæmia, on the other hand, is something that one would surely not wish to source anywhere...
I used to use both sickle and a scythe, Sydney; now I use a strimmer instead. As for a hammer, it is here in my toolbox. Ludwig Wittgenstein used to say that he had a tool box in his bag. Here was what he had inside. There was a hammer, pliers, a saw, a screw-driver, a ruler, a glue-pot, nails and screws. The function of words, he explained, were as diverse as the functions of these objects.
On a slightly different tack, I would not recommend the purchase of a "Flymo" hovering electric lawn-mower. Mine broke down after just thirteen months, with a lot of noise and plenty of white smoke. And my Flymo strimmer has also broken down, in that the little thing doesn't turn round any longer; but in this case it may be possible to replace the little thing if I can work out how to remove it.
"Karl Dahlman invented the mower in 1964 after seeing Sir Christopher Cockerell's Hovercraft machine. Flymo is a brand name of the Swedish company Husqvarna AB, formerly a part of Electrolux."