If you go to Costco for paper towels....you just bought your kid hours worth of fun!LO opened up our case of individually wrapped paper towels and has been having a blast building, knocking down and imagining worlds of fun with this. Unconventional 'toys' are often more fun than store bought.

Another good one when LO was much younger was to turn a strainer upside down and put pipe cleaners or pasta in the holes.

Then there are boxes. Anything and everything goes. The most memorable was when LO turned it into a mural and DH turned into a car.