Look, look... plot bunny has bitten me. We all know Jaskier is a man of many talents, he graduated top of his class for the 7 liberal arts.
We also know he would basically do anything to help ease the path for Geralt. So what if instead of teaching each winter, he decided to learn a trade.
Healing from the best healers he knows to make sure that when Geralt is wounded he can help stitch him, carry and make salves, mix the herbs Geralt will need for potions.
New HC though would be a leathersmith? Jask learnt how to tan hides properly from geralt, he'd have to for extra money to trade or sell. But what if one day Geralt's armour was nearly destroyed beyond repair and Jask just thought 'huh I should learn how to fix that' and he does. He spends several winters with many leathersmiths till his own reputation under another name began to proceed him?
Just picture witchers clamouring to get their sword caloused hands on these leather pieces that are Witcher durable and finding one was like finding a dragon... and geralt just... comes home with a WHOLE SET of Julek Armour and his brothers are just 'Geralt where the fuck did you get your hands on a WHOLE SET!?'
Geralt is just confused and mutters. "My bard??"
