Getting my 'thank you' face on

I've been reviewing superlatives to hopefully be able to produce words of thanks that don't sound too generic when I an opening gifts tomorrow. E.g.:

• "What a resplendent scarf!"
• "These dollar store chocolates look positively exquisite!"
• "I exalt this anti-dandruff shampoo!"
• "Windshield wipers! How eminently sublime!"
• "These are exactly the sort of stupendous socks I wanted! They'll look effulgent on my feet!"