Urgent Magic Help for Christmas! 🎄✨

Hey fellow magicians! 🎩✨

I need your help this Christmas. I'm putting together two effects to surprise my 30 spectators, but I have some questions and I think you could help me improve them. Here's what I've got:

Effect 1:

Before dinner, I'm going to hide a card under the tablecloth. During dessert, I'll ask a spectator to choose a card (forced, of course), look at it, and then I'll lose it in the deck. I'll fan the deck and show their card isn't there. Then I'll ask them to look under the tablecloth… and BAM, there's the card! 😮

But here's where I'm running into trouble:

The tablecloth will be full of plates and hot food, and I'm worried the card might be discovered or get ruined.

I'm also worried someone might catch on too early.

Any tips to make this cleaner and more secure?

Effect 2:

This one is a bit more ambitious. I'll tell them I'm going to put them into a dream by snapping my fingers. When I do, I'll tell them this is a dream and when they wake up, nothing will have happened. The idea goes like this:

I'll have two glass jars, each divided by a mirror separator. In each jar, there will be two different amounts of ingredients (for example, lentils in one and chickpeas in the other). On one side, a small amount will be visible, and on the other, a large amount.

I'll have a yogurt that looks freshly sealed, but it will be pre-gimmicked: I will have opened it beforehand and placed an internal separator with two compartments. On one side will be the mixed ingredients, and on the other, the yogurt will be intact.

I'll show the jars and put the ingredients into a bag. When I take them out, I'll say they've “traveled” to the yogurt. I'll open the yogurt, and they'll see the ingredients, but not the yogurt. 😱

Finally, I'll seal everything with tape, put it back in the bag, and take it out again: the yogurt will be intact, and I'll be able to scoop some out to show.

Questions:

How can I easily make a mirror separator for the jars?

How can I make the internal yogurt separator foolproof?

If anyone has ideas to simplify or improve these effects without accomplices, I'd really appreciate it! 🙅‍♂️

Thanks in advance! Magic regards and Happy Holidays.