Hi Ballemporium Ball,
You can dispose of assets that you or your husband owns and they will not count towards selling online, falling under capital gains guidelines.
Selling assets of other people, could be considered trading, as you do not own the assets and this would fall under Income Tax guidelines.
We can only provide general information and guidance in this forum, for an answer to a detailed question of this nature, you would need to contact our Self Assesment team or seek professional advice.
Self Assessment: general enquiries
Thank you.