Bamboo tongs with rubber tips are very effective. I use two with different colours for every darkroom session. One goes only into the developer, the other only touches stop-bath and fixer and I never interchange the two. That way there is no adverse contamination of the processing solutions or tong-marks or stains on the photographs.Im just going to get a cheap set of bambo ones,i was considering just going without as the ones i use in college have scratched the image a few times,however there steel ones. so i shall see how they respond to me