Where to find single serving items & condiment packs? For almost every type of single serving condiment, check out Minimus. They carry the hard to find packets of olive oil and nearly any single serving item you could desire. Don't be shy!
Ask for packets
whenever you eat out. Most fast food places will give them to you if
you ask nicely. I organize my packets in sandwich bags by type of
condiment. Try to rotate your stock, and for items like mayo and dressings, use them up in couple months or toss them.
Honey: Chicken places, fast food.
Butter and its imitators: Chicken and fast food.
Ketchup & mustard: Your favorite fast food place.
Salsa/picante sauce: Fast food that offers burritos and convience stores, sometimes you can find 4-8 packs of tubs at grocery stores
Ranch tubs: Fast food and Hidden Valley Dressing® in 4 packs at the grocery store.
Parmesan Cheese& Red Chilies: Costco and Sams Club food courts, any pizza joint.
Jam packets or tubs: Fast food, continental breakfasts at motels.......
Soy Sauce & sesame seeds: your favorite chinese place.
BBQ Sauce: fast food.
Salt and pepper packets: almost any place.
Mayonaise and relish packets: Convience stores that sell fried foods or deli's in grocery stores.
Arby's® is great for Horsey sauce, their BBQ sauce, etc.
Many McDonalds® and KFC® have moist towelettes in packets.
Papa John's® is great as they will sell you tubs of cheese sauce, garlic sauce, marinara sauce, etc.
Wilderness Dining carries a number of packets, including oil pouches and organic salsa pouches.