Trying to drop hints large enough that your players actually notice them can be frustrating for a GM. But you can always take refuge by engaging in dialogue between NPCs. In some sense, it's more satisfying than a monologue nobody is listening to.

Transcript

Obi-Wan: I tried analysing the dart in the Jedi labs, but they couldn't identify it.
Yoda: No answers will you find. Suspended you are.
Yoda: Go home you must, and on your indiscretions meditate.
Obi-Wan: I'm clearly on to something. You need to reinstate me.
Yoda: Do that, I cannot.
Yoda: Obligated I am to remind you, when the Jedi temple you leave, surrender your laser sword you must.
Obi-Wan: I'll try to remember.
Yoda: Spoke of a child, the assassin did. Investigate this, someone should.
Yoda: Alas, short-staffed we are.
Mace Windu: <snicker>
Obi-Wan: I see. If I see any bored Jedi as I drop my sword off, I'll let them know...
Yoda: By one failure, this investigation must not be cut short.
Mace Windu: <snicker>
Yoda: Up. Shut.