Please Help! Can you identify these artifacts?

[autographcollector11]

Can someone help identify these? These were found on a public beach near the Washington/Oregon boarder by the Ocean. 2 are sandstone. One appears to be an abraider tool-used the smooth the shaft of an arrow? The other looks like an ax-but being sandstone I doubt it. Perhaps a Celt?
The other has small circular holes that appears to show that someone once used it as a grinding tool. How old would these be?

[The Grim Reaper]

Sorry, but they just look like natural stones to me. I don't see any evidence of them ever being altered by man.