Create PS Credential from Strings 
$Username = 'Username'
$Password = 'Password'
$SecureString = ConvertTo-SecureString $Password -AsPlainText -Force
$Credential = New-Object System.Management.Automation.PSCredential $Username, $SecureString
Details
Use to create a credential object from two different string objects. Warning, only use in labs/testing as credentials are saved in plain text
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Quick and Easy Password Generator

This is a quick and easy password/random character generator. It returns random numbers between 33 and 126 and converts the number to the corresponding ASCII character.

$password = [string]::Empty
1..32 | ForEach-Object {
    $password += [char]$(33..126 | Get-Random)
}
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