<?php
    $counter = $this->helper('MagentoCheckoutHelperCart');
    $cartCount = $counter->getSummaryCount();
?>

<?php
$objectManager = MagentoFrameworkAppObjectManager::getInstance();
$cart = $objectManager->get('MagentoCheckoutModelCart');

$allVisibleItems = $cart->getQuote()->getAllVisibleItems();
foreach ($allVisibleItems as $item) {
    echo $item->getItemId();
    echo $item->getName();
    echo $item->getSku();
}
?>