Possible Clues:

• Tip of the S?
• Just the tip of the L - not the l - by the sound of it
• Just the tip or SSSE, perhaps
• Generous offering
• The tip that London gets, by the sound of it
• Generous disposal of gifts
• Not mean to give this S, perhaps
• Just the tip of the capital S, by the sound of it
• Money given generously
• Bounty