you can also do the same by creating mini samples for insert into gift baskets or care kits. Chocolate powder, sprinkles, etc. for cocoa, ice cream.

you can also create mini kits for coffees, teas, and other drinks by packaging each ingredient per bottle; re-label bottle. bag the goods in clear baggie, tie colorful ribbon around neck, cut off top of baggie; apply sticker or creative fancy label to the set. ditto that for a bath kit–bath salts, crystals, bubble bath, foam.
these kits can be gifted at visits, to guests, for pick me up’s with a card to friends, family, others, and for children’s/girl’s sleepovers. you can also apply the same concept to sharing your own personal stash of aftershave, cologne or perfume. add a sample to a bottle, add to a kit. you can also take a generic lotion or bubble bath bought for cheap, and upscale the smell, look or texture by adding some ingredients, and then repackaging and sharing or selling. you can add a special plastic, colorful ‘gem’ bead to the bottom of lotion bottles to help with getting all lotion from the bottom; and the bead can be an aromatic gem in someone’s car, desk, etc.

the small bottles can also be mini water bottles for runners, children and pets on the go. you can also add special beverages, including milk, sports drinks or adult ones. freeze the bottles for instant cool drinks when at outdoor concerts or events that are portable and less expensive than on-site drinks.

the good ideas above that included freezing the bottles with water to use as ice packs–you can also drop these into a larger sports bottle when cycling, at the gym, etc, to keep drinks cool.

you can also put some small holes on these bottles and fill them with small pieces of soap

use them for sand art for kids.

great toy for kids.

wash them, put water inside and freeze them. Once they’re frozen use them to keep your lunch cold.

if you mix paints, or any other liquid.