Quickly Register Post Types, I found myself registering many of the same type of WordPress post types and create a little helper function.

hg_register_type.php

function hg_register_type( $plural, $singular, $post_type = false, $position = 30, $supports = array('title','editor','thumbnail','author','custom-fields'))
{
	$uc_plural = ucwords($plural);
	$uc_single = ucwords($singular);
	$lc_plural = strtolower($plural);
	$lc_single = strtolower($singular);
	
	$pt = ($post_type) ? $post_type : $lc_single;

	$labels = array('name' => $uc_plural,'singular_name' => $uc_single,'add_new' => 'Add New','add_new_item' => 'Add New ' . $uc_single,'edit_item' => 'Edit ' . $uc_single,'new_item' => 'New ' . $uc_single,'view_item' => 'View ' . $uc_single,'search_items' => 'Search ' . $uc_plural,'not_found' => 'No ' . $uc_plural . ' Found','not_found_in_trash' => 'No ' . $uc_plural . ' Found in Trash', 'parent_item_colon' => 'Parent ' . $uc_single . ':' );
	register_post_type( $pt, array ('labels' => $labels,'description' => '','publicly_queryable' => true,'exclude_from_search' => false,'map_meta_cap' => true,'capability_type' => 'post','public' => true,'hierarchical' => false,'rewrite' => array ( 'slug' => $lc_plural, 'with_front' => false, 'pages' => true, 'feeds' => $lc_plural ),'has_archive' => $lc_plural,'query_var' => $lc_plural,'supports' => $supports, 'taxonomies' => array (),'show_ui' => true,'menu_position' => $position,'menu_icon' => false,'can_export' => true, 'show_in_nav_menus' => true,'show_in_menu' => true ));
}

// USAGE
hg_register_type( 'Pianos', 'Piano', 'piano', 5 );
hg_register_type( 'Guitars', 'Guitar', 'guitars', 5 );
hg_register_type( 'Accessories', 'Accessory', false, 5 );
hg_register_type( 'Testimonials', 'Testimonial', false, 25 );