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No. There is no such thing.
If that is the case, then Vishnu the creator doesn't create anything which won't be any use to him.
If you offer any flower with pure devotion from the bottom of your heart then the Pooja is fulfilled. If you offer Gold flowers without devotion then the pooja is useless.
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The story of Indra and Vṛtra is metaphorical as explained below.
Since you cited a quote from the Rig Veda. Therefore, in the first place, the question of Viṣṇu helping Indra has to be understood in the context of the primary sources namely Vedas and Brahmanas.
In Śatapatha Brāhmaṇa, it is stated that
वृत्रो ह वा इदं सर्वं वृत्वा शिश्ये । यदिदमन्तरेण ...
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