You can also get stainless versions of those triumph clips, not sure where from though, ages since I got any?
Beware cheap versions of the John Bull rubber straps, they perish really quickly even when not exposed to sunlight. The 'genuine ones are marked John Bull and seem to be holding up OK on my ' 68 Triumph, the only bike I can be bothered with using period correct stuff.
I also like using reusable zip ties where not in view, they have a small tab that releases the "ratchet". Useful when you need to change a cable etc.