These lacquered boxes from the Container Store are an inexpensive way to add a pop of color and they come in a variety of sizes. I bought the big one (only $17.99) for my coffee table and love it.
These little Herb Pots are fun with their chalkboard fronts, you can scribble on the name of the herb in case you are forgetful and reach for the basil and pick the mint by accident. Only $9.99!
There are also these chalkboard garden markers a set of 3 will run you $12.99 from Crate&Barrel.
I think these would be hilarious to have in your car to leave on the windshield of the person who parked within an inch of your side mirror so you that you can't get in the driver's side of your car. ZGallerie for $11.95
These stripey paper straws are super fun for parties - you can get them in practically any color on Amazon for about $6