The YieldHub will support both ERC20 and ERC1155 token yielding. In our current case this will be the ERC20 Banana token for the Genesis Kongz and the different ERC1155 Charmz tokens for the Baby CyberKongz.
Under the condition that enough Shardz have been accumulated, they can be used to discover Charmz. Shardz are yielded by your Baby CyberKongz and you claim them on the Ethereum mainnet. Next the claimed Shards are bridged to Polygon and in a third step one Charm can be discovered from 100 Shardz on Polygon.
This way, Baby CyberKongz can remain on Ethereum and the more expensive randomisation/mint transaction of discovering Charmz takes place on Polygon and transaction fees can be saved.