Sounds:

https://freesound.org/people/day_tripper13/sounds/166650/
https://freesound.org/people/Setuniman/sounds/174800/
https://freesound.org/people/zimbot/sounds/178332/
https://freesound.org/people/Robinhood76/sounds/95253/
https://freesound.org/people/dingo1/sounds/181546/
https://freesound.org/people/xtrgamr/sounds/331624/

Fonts:
https://www.1001freefonts.com/cute_notes.font
https://www.1001freefonts.com/valpuesta.font
https://www.1001freefonts.com/urania.font

Brushes:
https://www.123freebrushes.com/cloud-doodles/
https://myshinyboy.deviantart.com/art/Comic-Ballons-Brush-Set-1-185144175
https://greenliquidbrain.deviantart.com/art/10-tone-brushes-87840246

More information
StatusPrototype
PlatformsHTML5
Authorxh_ii