I'll give this a try! I lost 70 lbs and have maintained that weight loss for nearly 2 years, I guess I'm a "skinny" person now

(so nice to type that). Here is what I ate today (this is a very typical day for me):
B - 2 pieces of whole grain toast (organic, sprouted), 1 piece with 1 tbs natural peanut butter, 1 piece with 1 tbs organic cherry jam
S - 1.5 cups of fresh blueberries
L - big salad from the salad bar downstairs - field greens, broccoli, romaine, red peppers, tomatoes, chickpeas, carrots, artichoke hearts, turkey, little scoop of sesame seeds, cucumber, balsalmic vinaigrette on the side
S - orange
S - cut up veggies (enough to fill a baggie) - baby carrots, sugar snap peas, grape tomatoes, red pepper strips
D - veggie tacos - 3 whole wheat tortillas (La Tortilla Factory, 50 calories each), 2 crumbled Morning Star Farm veggie burgers, salsa, tons of spinach leaves, 1/4 cup low fat cheese
S - 1 cup roasted butternut squash, 1 tbs maple pumpkin butter (like apple butter, not "butter")
Just a note - I eat exactly the same foods I ate to lose weight, I just allow myself more healthy calories. Maintenance (ie, staying a skinny person) is exactly like weight loss - I made a lifelong change. For 20 years, I restricted/binged, lost weight, gained weight...I finally had to accept that I couldn't make short term changes and expect long term results.
I still do a ton of planning, shopping, packing lunches, cooking. I still concentrate on eating nutritionally powerful foods and avoiding foods without nutritional benefits (no fast food, sugary soda or packaged baked goods). I stil count calories and food journal. My daily caloric goal for maintenance is 1800-2000 calories (depending on my physical activity).