You can also make copies of account statements or other financial documents that you find lying around the house or in any other place you might normally go during your day. (ontariodivorcehelp.ca)
Finally, if you can't take the whining and complaining and wanting something that's in appropriate then why don't you just go during the day, buy three costumes, come home and say,» Which would you like?» (kidsinthehouse.com)