K-5 / K-7 strap lugs
Searched on fleabay and found some of the similar little leather bits.
11quid ! ($17.50!!!) must be joking.
Do you have a sharp knife? Can you get a tiny bit of leather sample from an upholsterer store.
I'd walk into a store and say that you are going to cover your old couch in leather and ask for a smalll test piece to show the wife, postage stamp size is OK.
Tip: dont actually show it to her or you might have to actually buy a new couch!
Split rings you should be able to get from any hardware store, home depot or whatever the Norwegain version is. "Byggmakker" ?