Sweeten (up) the kitty phrase
To cause something to be more interesting, exciting, or attractive in the way connected with money and finance.
By sweetening up the kitty with a financial reward, you can influence your kid to work harder.
It wasn't until the teacher sweetened up the kitty by giving a 100 dollars bill for anyone who can solve the puzzle that all students willingly gave it a serious thought.
To appeal to someone
Something that interests or excites someone for a short period of time
Each person has different interests that need to be respected.
If something is on your radar, it is within the spectrum of one's interest, awareness, attention, or consideration.
To excite or amuse someone; to be successful.
This phrase derives from card games like poker, where it implies "add money to the pool," and sweeten meaning "make more agreeable."[Slang; c. 1900].