public function indexAction()
    {
			$layout = $this->loadLayout();
			$block = $this->getLayout()->createBlock(
			'checkout/cart_sidebar',
			'PPWD_Custom',
			array('template' => 'checkout/cart/sidebar.phtml')
			);
		    echo $block; 
		   // $this->renderLayout();
		
    }


=============================================================================================
theme/layout/custom.xml


<?xml version="1.0"?>
<layout version="0.1.0">
    <custom_index_index>
        <reference name="content">
            
            
              <block type="custom/cart_sidebar" name="cart_sidebar" template="custom/cart/sidebar.phtml" before="-">
                <action method="addItemRender"><type>simple</type><block>custom/cart_item_renderer</block><template>custom/cart/sidebar/default.phtml</template></action>
                <action method="addItemRender"><type>grouped</type><block>custom/cart_item_renderer_grouped</block><template>custom/cart/sidebar/default.phtml</template></action>
                <action method="addItemRender"><type>configurable</type><block>custom/cart_item_renderer_configurable</block><template>custom/cart/sidebar/default.phtml</template></action>
                <block type="core/text_list" name="cart_sidebar.extra_actions" as="extra_actions" translate="label" module="custom">
                    <label>Shopping Cart Sidebar Extra Actions</label>
                </block>
            </block>
            
            
        </reference>
    </custom_index_index>
    
    
</layout> 
=============================================================================================