i have just a couple of spoonfuls left in a big container of yogurt. what should i do with it?

If it's plain yogurt with live culture, make more yogurt.

Eat them. Then rinse and recycle the container.

Add it to mashed potatoes!
Use it as sour cream on baked potato.

I would just eat it straight from the container. I wouldn't want to mess up anything more than a spoon for that amount.

Enrich a sauce! A pan sauce for steak, a marinara, a curry...just whisk it in off heat...delicious. Or fold it into a risotto for added richness. I like to add yogurt, crème fraîche or sour cream to whipped cream for a little depth and tang. You could make a salad dressing out of it.....erm.....I'll think of more...

Blend it in a smoothie, or if it's plain yogurt, throw it in a pesto for a creamy texture on pasta. You can also sub yogurt for oil in some dessert recipes.

Put it on scrambled egg tacos (with guacamole and salsa of course) instead of sour cream!