One of the most difficult parts of examining any electronic signal on a modern PCB is the inability to get an oscilloscope probe tip or set of logic-analyser probe tips actually attached to the test points. These test points are often the pin on a IC. With IC packages routinely spacing pins at 0.025" (@0.7mm) apart, is often impossible to hold a probe tip onto an individual pin and operate the controls of the scope/analyser.
Perhaps using thin tubes of ultra-strong neodymium magnets with a 30AWG wire-wrap leads attached would be an answer. These tubes would be about 0.5 mm in diameter and about 3-5mm long. Even with the strong magnetic material, the small size of the tube or pin means that it would have just enough magnetic strength to be lightly attached to an IC pin, and not fall off due to gravity. One end of the tube/pin would be magnetically attached to the steel or copper IC pin. [do magnets attach to copper? For argument, assume yes] and the other end would be soldered to a length of 30AWG wire-wrap wire that would connect to the standard oscilloscope probe or logic-analyser pod.
Would the magnet force holding the probe to the IC pin be enough to affect the reading of the electrical signal on the pin? I don't think so because the resistance of the pin is in milliOhms. At most it would slightly affect the rising and falling edge time of the digital signals.
Neodymium magnets seem to be really cheap. 1/4 inch square 'science-project' magnets sell for about $0.35 each. But can they be made very small?