If not - what about Andorra, Monaco, San Marino, Liechtenstein, the Vatican.... even Malta (some people consider it too big).
Smaller nations are
Palau with over 20,000
Nauru 12,000
Tuvalu 10,000
Recognized, so if a military dictatorship like Thailand give someplace the ok than its legit?
New added
Réunion (unfortunately noting in english)
http://www.reuniao.org/projeto4.0/inicio.htm
Republic of Formoria
http://fomoire.org/
Republic of Cascadia
https://zapatopi.net/cascadia/
Empire of Atlantium
http://atlantium.org/
Texas Nationalist Movement
https://tnm.me/
Vermont Republic
http://vermontrepublic.org/vermont-declaration-of-independence/