[Q]: Objective: To crimp down the edges of a baked pastry, you can
[A]: Use a fork all the way around the edges to crimp them down

[Q]: Objective: use baking soda to wash veggies
[A]: Fill a large bowl with water. Then add a teaspoon of baking soda. Add the veggies. Soak for a minute or two. Scrub with a brush. And finally, rinse off the veggies.

[Q]: Objective: To prevent the kneaded cinnamon bread dough from sticking while rolling it out
[A]: Roll out your dough on a piece of parchment

[Q]: Objective: open a stuck jar
[A]:
Take a wooden spoon or a butter knife with the straight edge facing the lid. Give the lid of the jar a couple of firm taps. This can have the effect of disrupting the seal. After tapping, try to open the jar again. You made need to repeat the tapping a few times to get that lid to budge.