Lots Paul
They are bespoke for a particular job
Robust, lasting many time longer than the cr*p most tackle Co make.
I have a pair of arm indicators that I made for breaming back in the 1970s 77 I think, long before Fox made them. Which I still use to this day under the right conditions. They have accounted for several hundred doubles over that time as well.
With the exceptions of line, real hooks and reels I've made them all. The latter two I even made from bent pins and cotton bobbins when I was a kid. Worked as well and I caught small roach on them.
I take the view, if I find myself in situations where a set of problems presents themselves and I don't have a piece of tackle to get around it. I'll only get caught out once by it/them, because next time I fish in those circumstances I will have made a piece of tackle that gets around it.
It's well know I fish the Ribble, which is a tackle thief, and because of that and I'm a tight sod
I make all my own feeders and have done for the last 15 years or so. The cost of each one is around 20p at most. And only because I may have to buy the lead occasionally.
The rest come free scavenged from raiding the recycling bins and skips.
Somewhere on here is an article on how to make them.