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Redesign of the flag of Chad (so we don't confuse it with Romania any more). The waves symbolize Lake Chad, the rising sun a new beginning.
(files.catbox.moe)
Symbolism mainly taken from the coat of arms:
Some other redesigns:
From HansLN
From Reddit user u/imagiflaggi:
From Reddit user u/DerCriado:
From Reddit user u/Eunaotenhoesmola:
And Charlie brown.