I have made my own feeders for years, the most recent efforts are made from brown plastic plant protector tubes . I had a big bundle left after I planted a country hedge a couple of years ago, they make nice brown flexible open ended feeders, one tube will make about a good half dozen or more, a strip of lead flashing provides the weight, very simple, very effective.A bonus is that being flexible , if they get snagged behind a rock they just seem to "spring" out if given a quick jerk.The loop is made from mono, which is just clipped onto a sliding rig link on the main line.
I have made feeders from all sorts of bits over the years, the lighter coloured ones are for reservoir bream, they dont seem to mind what colour the feeders are, the darker coloured ones are for rivers where I have noticed that brighter colours seem to put the fish off a bit.
Over time I have found that it is quicker and easier to heat up a steel rod and melt the holes in the feeder instead of drilling them.I usually use a thick tent peg.
O M R
Hurrumph....... whatever happened to Handlines ?