Many of them are high pressure 40mm grenades with some 3D printed parts stuck on. They’ve moved to injection molding for the adapted munitions now that the war has progressed, but you still see examples of the 3D printed stuff being used. It’s shockingly effective (note that you need to modify the grenade detonator for air-dropping to work, I couldn’t find those files in the fifteen seconds I dedicated to this (sorry)). Then just hook it up to any R/C plane bomb drop kit, there’s a bajillion of them out there to choose from.

The suicide drones are usually detonator-modified RPG-7 rockets attached to the drone on 3D printed mounts and then detonated lunge-mine style. Not as effective against personnel vs. the 40mm grenades, but certainly not ineffective. More expensive, though.