You can sew a gig bag for a guitar, bass, ukulele, or a banjo with this wonderful free tutorial from "tewharau" who constructed two of these bags and gave them as gifts to his wife and daughter.
B-Stock, Kala UBASS SSMHG FS Bass Ukulele - solid spruce top
Harley Benton Kahuna CLU-Bass Ukulele http://www.thomann.de/gb/harley_benton_kahuna_clu_bass.htm
Kala UBASS SSMHG FS Bass Ukulele #Thomann
Kala UBASS SSMHG FS Bass Ukulele #ukulele #music #thomann