Free virtual envelope app for iPhone & Android. Solves the issue of one spouse not knowing how much they can spend because they don't have the cash envelopes with them. Works beautifully with Dave Ramsey's plan.
Pinner suggested: Gave to my 12 yr old, everyone I know said it sounded like a drug stash :), don't use a pint jar, it was really hard to find jars that did not have some texture on them. But the vinyl is awesome and easy to apply.