What is a quote that involves the exchange of gifts?

One quote about the exchange of gifts in Shakespeare's comedy The Merchant of Venice can be found in act 2, scene 4, in a servant's description of Bassanio to Portia:

Madam, there is alighted at your gateA young Venetian, one that comes beforeTo signify the approaching of his lord;From whom he bringeth sensible regreets,To wit, besides commends and courteous breath,Gifts of rich value. Yet I have not seenSo likely an ambassador of love:A day in April never came so sweet,To show how costly summer was at hand,As this fore-spurrer comes before his lord.

This description follows two unsuccessful suitors' attempts to win Portia's hand in marriage and represents a glimmer of hope for Portia. Maybe this third time will be the charm. Bassanio's description, including the fact that he comes bearing gifts, make him a more viable prospect for the lady.
You could also use quotes about the exchanging of rings to fit this topic. Portia gives Bassanio a ring and then, when she is disguised as a man, asks for it back as a test of his loyalty. See the following exchange between Bassanio and disguised Portia, for example:
PORTIA
You press me far, and therefore I will yield.To ANTONIO
Give me your gloves, I'll wear them for your sake;To BASSANIO
And, for your love, I'll take this ring from you:Do not draw back your hand; I'll take no more;And you in love shall not deny me this.
BASSANIO
This ring, good sir, alas, it is a trifle!I will not shame myself to give you this.
PORTIA
I will have nothing else but only this;And now methinks I have a mind to it.
BASSANIO
There's more depends on this than on the value.The dearest ring in Venice will I give you,And find it out by proclamation:Only for this, I pray you, pardon me.
PORTIA
I see, sir, you are liberal in offersYou taught me first to beg; and now methinksYou teach me how a beggar should be answer'd.
BASSANIO
Good sir, this ring was given me by my wife;And when she put it on, she made me vowThat I should neither sell nor give nor lose it.
They go back and forth about whether he will hand it over, which ultimately he does, then later when Portia is again dressed as herself she pretends not to know what has happened and asks to see the ring, just to watch Bassanio sweat.