WordNet sense 1 (done by hand without mechanical aids or devices):

freehand

WordNet sense 2 (being or productive of something fresh and unusual; or being as first made or thought of):

original

WordNet sense 3 (given or giving freely):

big, bighearted, bounteous, bountiful, giving, handsome, liberal, openhanded

WordNet sense 4 (willing to give and share unstintingly):

generous