A pyrotechnic nosecone named Bottle Cap. Built in the KSP 1.7.3 Subassembly with 3 stock parts.
Fire this climbing through 50km (lower drag) or turn retrograde in low orbit and fire it…
Twin Sepatrons evacuate it immediately from your path and also effect its de-orbit. Starboard charge fires for 8s while port burns out after 7.2s, leading to a tumble that should clear it from your immediate path. Tune for purpose.
In the VAB, trigger & stage together in that order. In flight, fire & forget
.