Following on from @KikiAn_diy’s post (My idea for saving a sewing related shopping list in Stash Hub app) about their way of managing their notions-to-buy list 
(so that they know what to buy from a single shop all together & thus save on delivery costs & time).
In the existing “Shopping List” area of the app we can already view by “Type” (Fabric, Pattern, Notion), “All Projects” + “Project Queue”. But, @TheWizard I wonder 
provided that someone had already saved an individual Notion record as…
a.) linked to a given Project,
and also b.) typed & saved that Notion record with a Shop (into the “Shop” field)
… if it might be handy for users to be able to filter/view the “Shopping List” by “Shop”… so that they could easily remember to buy multiple things in a single purchase + save £ on shipping fees 
That, then makes me wonder if for saving/editing “Notions” records themselves if there could be some sort of button to add-to-shopping-list (to marry up existing Notions records to Shopping List), and similarly… if within the existing “Shopping List” area when we use the 
button it could (in addition to the button’s current functionality) suggest to add a record from existing Notion records?
)