With all due respect, none of these ideas are feasible. The US has space based radar, and monitors very closely all satellites, including mircrosatellites. In fact, micro satellites are not so 'micro', they still weigh over a hundred pounds. The US actively monitors all satellites including space debris the size of your fist. There is no way to 'block' a spy satellite, as it will be obvious, and the spy satellite will immediately alter is orbit to free its view. A micro satellite simply doesn't have enough fuel to outmaneuver a spy satellite. You can't sneak up on a satellite and drill/clamp onto it without first raising alerts in the US who will have plenty of time to react. A micro satellite would have to be stealthy, but even a stealthy one would be susceptible to optical detection as it occludes background stars. And the US has a lot of astronomical observatories at their disposal. And you can bet they are all digitally linked to the USAirForce Space Command -even if most astronomers don't realize this. All ASAT weapons are based on lightning strikes, with very little reaction time granted to the target satellite. America's primary ASAT weapons are air-launched from high altitude fighters. Such armed fighters are kept prepetually inflight for just such an attack when needed. A micro satellite could be an ASAT that lies in wait as it trails a respectful distance behind its target. When the order for attack is issued, all the microsatellites attack quickly and simultaneously. The idea is there would be to many course corrections in need of transmission to save them all. But such a 'constellation' of ASAT's was rejected by both the US and the USSR as too costly to maintain. Perhaps, with the cost of microsatellites coming down, it may one day become a reality. Word is there is development of nano satellites (which are under one hundred pounds). A parasite could possibly attach itself if the spy satellite were ever in the 'blind spot' of earth orbits. This is where the sun is immediately behind the satellite from the earth's point of view. But even this may be foiled by postioning a space based radar on Earth's first Lagrange point (facing the earth, not the sun). Solar studies satellites are usually placed at this point, but they face away from the earth, towards the Sun. I wouldn't be surprised if the US already has a space based radar at the first Lagrange point (L1).