Entry 1 said:
This isn't a flag for a country with an alternate history, it's just an alternate flag for the State of Hawaii(OTL). The yellow flower is a yellow hibiscus, Hawaii's state flower, and the waves represent Surfing, an iconic sport of Hawaii.
Entry 2 said:
Here's a redesigned British Columbia:
The yellow represents the sun, the blue represents the Pacific, and the red and white represent Canada!
Entry 3 said:
The Chagos Islands (OTL British Indian Ocean Territory) Nation Flag, as a constituent part of a alternate UK/British Empire, formally registered in 1986 (Here Diego Garcia is not handed to the Americans for a military base, so there's no forced eviction of the native Chagossians, and eventually, they become one of many Nations and Provinces within the new UK/BE).
Entry 4 said:
State of Ontario
After the United State's intervention in the Upper Canadian Rebellion, the Republic of Canada was established as a puppet state of the United States. Now with independence Canadians set out to create new symbols for their identity. Upper Canada, now renamed Ontario created a flag based of the old rebellion flag.
Entry 5 said:
National flag of New Zealand in TL-4723
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Excerpts from an MSSE dossier [1], based on information collected by the MIEC [2] of the IDA [3]:
"TL-4723 is speculated to be a relatively recent branching of TL-75 [4].
4723 is well-known as one of the few discovered timelines where New Zealand citizens eventually adopted a more distinctive national flag. The Southern Cross symbolism was preserved, but the traditional Union Jack canton was removed and replaced with a silver fern on a green background. Original plans included keeping the fern on a black background, but the majority of voters taking part in the successful national flag referendum chose a green background variant instead. Though there is some nostalgia for the older flag, especially among older generations, younger generations and more nationalistic New Zealanders have grown fond of the new one in just a few decades. Nowadays, the newer national flag is often referred to colloquially as 'the Fern and the Cross'.
Historians have hotly debated whether certain issues in the political and economic relationship of New Zealand and the United Kingdom, regularly re-occuring since the 1970s, proved a contributing factor in..." (ERROR; insufficient amount of data recovered; unable to read complete excerpt)
Notes:
[1] - Multiverse Sociopolitical Survey Expedition
[2] - Multiverse Institute Exploration Corps
[3] - InterDimensional Alliance (a sort of multiversal UN/NATO)
[4] - OTL
Entry 6 said:
The Confederation of Australasia
Following the successful confederation of the British American Dominions the same was pushed through for the British Australasian Dominions.
A flag contest was held and the following flag based on one proposed for New Leinster. The flag features a red half and blue half representing the 2 common ensigns, 4 red on on white stars in the pattern of the Southern Cross, and the Confederation Star.
Entry 7 said:
Flag of Fiji
This flag is intended to be interpreted as a journey: The blue stripe provides continuity with the previous flag and thus the Fiji of old, as well as representing the ocean and the maritime origins and culture of Fiji. The white stripe shows modern Fiji, represented by the stars which are united upon the turtle, which represents the humility and perseverance that Fiji intends to display in order to move forward from the old to the new. The gold stripe represents the future of Fiji - the warm sunrise and prosperity that will come if Fijians respect and love one another, and move forward together. The three stars being the three different elements of Fiji in various areas (the geographical elements of Viti Levu, Vanua Levu, and the other islands of Fiji; the ethnic elements of indigenous Fijians, Indo-Fijians, and other ethnic groups; the religious elements of Christians, Hindus, and other religions; and the linguistic elements of Fijian, English, and Hindustani). They are seven-pointed as a symbol of good luck.
, I've cast an apologetic vote for NZ for my entry being too close in appearance 
