"What to do with these thousand paper cranes?"
These are few suggestions.
1.You can send the thousand cranes to the Children's Monument in Hiroshima's Peace Park, string them on garlands of 100 cranes each, and mail them to
Office of the Mayor
City of Hiroshima
1 Chome Naka-ku
2.Paste them on Cards and envelopes with the peace message.Thus spearding the peace message.
3.If your Orizuru(paper crane) is quite tiny you can paste it on your visiting cards.
4.Make visiting cards out of your Paper crane by writing address on its wings.Well when your give such a visiting card its like spreading of peace message + your skill showchase + ofcousre your address.:
5.String them and hang them in your room.
6.You can make fancy ornaments from them too.