Hint: Easy Blobolonia cornfield:
Start running and throw the coconut approximately one screen before the start of the cornfields to transform Blobert into a coconut that will roll through and smash the kernals.
 

Hint: Cherries:
Shoot the cherries that fall with the Vita-Blaster and vitamin C.

Game Genie codes
AAULNGIA - 1 life only
ZAULNGIE - Double lives
GXXEOPVG - Infinite lives
AAVKIPPA - Infinite Jellybeans
* AVOGAEOZ - Invincible *
AVOPVGEI - Never take damage from enemies
APEUUIAA - Gives 10 Orange Jellybeans
AONUSGAA - 10 Lime Jellybeans
OONLOGZN - 99 Licorice Jellybeans
AUNLUGIP - Double Strawberry Jellybeans
TUNLNKAP - Double Cola Jellybeans
AKNUOGGX - Double Cinnamon Jellybeans
GXNUUGZP - Double Apple Jellybeans
AVNUNGAL - Double Vanilla Jellybeans
ZPELNITA - Double Ketchup Jellybeans
AONLSGTE - Triple Coconut Jellybeans
APELUITE - Triple Rootbeer Jellybeans
APEUSIAA - 10 Vitamin A for Vita-Blaster
APEUNIAA - 10 Vitamin B for Vita-Blaster
APOLOIAA - 10 Vitamin C for Vita-Blaster
SZXLXKSU + YYXLUGEY - Gives 101 of all starting Jellybeans

*For this code, in the underwater section, if you lose a life you may not be
able to call your Blob, and therefore become trapped.