SB 5.3.6

parijanānurāga-viracita-śabala-saṁśabda-salila-sita-kisalaya-tulasikā-dūrvāṅkurair api sambhṛtayā saparyayā kila parama parituṣyasi.
Word for word: 
parijana — by Your servants; anurāga — in great ecstasy; viracita — executed; śabala — with a faltering voice; saṁśabda — with prayers; salila — water; sita-kisalaya — twigs bearing new leaves; tulasikā — tulasī leaves; dūrvā-aṅkuraiḥ — and with newly grown grass; api — also; sambhṛtayā — performed; saparyayā — by worship; kila — indeed; parama — O Supreme Lord; parituṣyasi — You become satisfied.
Translation: 
O Supreme Lord, You are full in every respect. You are certainly very satisfied when Your devotees offer You prayers with faltering voices and in ecstasy bring You tulasī leaves, water, twigs bearing new leaves, and newly grown grass. This surely makes You satisfied.
Purport: 

One does not need great wealth, education or opulence to satisfy the Supreme Personality of Godhead. If one is fully absorbed in love and ecstasy, he need offer only a flower and a little water. As stated in Bhagavad-gītā, patraṁ puṣpaṁ phalaṁ toyaṁ yo me bhaktyā prayacchati: “If one offers Me with love and devotion a leaf, a flower, fruit or water, I will accept it.” (Bg. 9.26)

The Supreme Lord can be pleased only by devotional service; therefore it is said here that the Lord is surely satisfied by devotion and nothing else. Quoting from the Gautamīya-tantra, the Hari-bhakti-vilāsa states:

tulasī-dala-mātreṇa
 jalasya culukena vā
vikrīṇīte svam ātmānaṁ
 bhaktebhyo bhakta-vatsalaḥ

“Śrī Kṛṣṇa, who is very affectionate toward His devotees, sells Himself to a devotee who offers merely a tulasī leaf and a palmful of water.” The Supreme Lord is causelessly merciful upon His devotee, so much so that even the poorest of men can offer Him a little water and a flower in devotion and thus please Him. This is due to His affectionate dealings with His devotees.