You can watch a man building an elaborate sandcastle.
If you really like it, you can put some money in his bucket to support the arts.
You can watch a mime sit as still as a statue.
If you put money in his bucket he will dance for you.
There was a guy begging for money on the street, but in Waikiki Beach, having a gimmick will get people to give you their money a lot faster.You can stop in at The Stupid Factory and read funny tee shirts and funny pajamas.
You can stop in front of the statue of Duke Paoa Kahanamoku and try to throw a lei up onto his arms. You can call your friends and tell them to log in to http://www.honolulu.gov/multimed/waikiki.asp
and you can wave at them.