News from Toontown.com:

Grand Prix Mondays

Win a trunkload of karting tickets by racing in a tournament-style competition against other Toons. Start a race at any Toon Battle starting block, and you will automatically enter one of two Grand Prix Circuits. All day -- every Monday!
Bingo Wednesdays

Work together with the other Toons at any neighborhood playground pond. If you complete the Bingo card before the clock runs out, you win lots of jellybeans! All day -- every Wednesday!
Trolley Tracks Thursdays

It's Trolley games galore every Thursday as Toons in groups of two or more riding the Trolley in any neighborhood playground can cast votes to determine the Trolley's next stop -- if your stop is selected, you earn bonus jellybeans!
Silly Saturdays

Each Saturday, Toons can play their favorite weekly events -- all in one day! That's 2 hours of Fish Bingo, 2 hours of Grand Prix, followed by 2 hours of Trolley Tracks -- rotating all day long, every Saturday in Toontown!
Not only are these events fun, but they can really fill your bank!