Laravel 5: Installing Form and HTML classes without composer

I'm interested in installing Form and HTML classes on Laravel 5 without composer. How can I do this?

For those wanting to convince me to use composer:

1) I want to see what it does by doing it manually myself at least once.

2) There is no composer on my hosting.

3) Using composer.phar throws an error: Script php artisan clear-compiled handling the pre-update-cmd event returned with an error, gives a warning: Warning: Composer should be invoked via the CLI version of PHP, not the cgi-fcgi SAPI and runtime exception with blank error output.

via Chebli Mohamed