More kids = more stuff, but less time to deal with all of it. It's not a problem that's unique to parents of multiples. In fact, the issue of Stuff that takes over our lives overwhelms a lot of American families.
Here are a couple of tips that might help.
2) Edit. Get rid of anything you don't need, and be brutal about it. The Twin Cities have several charitable organizations who gladly accept donations of household items, clothes -- just about anything. Check out ARC's Value Village, for example, or the East Side Neighborhood Services of Minneapolis. If you can't drop off your donations yourself, The Lupus Foundation will pick them up for you.
3) Invest. Getting the right storage for the things you do need to keep can make the whole mess more manageable. Stick with purchases that are flexible: a box that's just the right size for all your old photos is great, unless you'll need to add more photos to it later. Look for modular items that can be rearranged according to your needs.
What are your best tips for getting your house organized, and how do you keep it that way?