Then just make a new symbol, the sickle is not as representative today as it used to be when it was invented anyways, since agriculture is more industrialised now, at least in Finland.
Worst comes to worst they can still wave the flag of AES countries, at that point banning even those would start to have its consequences. It's a losing battle by the bourgeois state, because socialism isn't tied to specific symbols and flag waving, we can adapt.