I think the first 2 are the same object... ear pick? the third looks like a hairbrush with hair in it... and i'd guess the last one to be the skin of an orange...
yeap...this is reverse lens technique done using a Canon A80 at 3.0x optical zoom, then I placed my canon slr's 28-80mm lens (set to 50mm) in reverse in front of the A80.
Left hand, held the 28-80 lens
Right hand, held the A80
The smallest F number that the A80 allow me at 3.0x optical zoom is only F4.9...so I took a subject a few times cos i do not have a reverse ring adapter.