Does one have to do tevilas keilim on a glass cake tray or candy dish given for Shaloch Manos

Can you wear a hospital bracelet in an area without an eruv? What about a visitors sticker?

Can you heat up a half baked souffle on Shabbos? What about one with a chocolatey inside? Serving it with a scoop of ice cream?

Can you make Starbucks VIA the same way you make any instant coffee on Shabbos? Is there any way to make a microground coffee on Shabbos?

Are all medicines kosher? What about vitamins? Tablets, gelatin capsules, softgels, chewables & liquids.

Does gelatin need to come from a kosher-slaughtered animal? Is it fleishigs?

Can you use an electric menorah? If you are in a hospital or hotel for Shabbos can you use the lights for Shabbos licht or Havdalah?

Can a bracha be made on lighting a menorah in a park or another public are?

Does one fulfill the mitzvah of tzitzis with a mesh garment?

Is an undershirt that has four corners and tzizis valid for the mitzvah of tzitzis?