Hi ! just wondering how everybody secured brake pipe , fuel pipe and wiring . ie clips that can be undone easily for future replacement or permanently fixed . rivets , rivnuts, or self tapping screws ? p clips or other type ?

Rubber lined P clips

My brake and fuel lines are secured by proper plastic fittings , cost pennies, made for the job and easy to replace if broken . Rubber lined P clips for the loom

anyone recommend a decent cheap supplier for metal clips. looking at 15 or 16mm ones. gonna need a few but seem around £4 for 5 where i have checked. seems dear to me! or am i being tight?????
steve