Toy Suggestions for Entertainment?

The dogs are ansy.... the snow is still about 3ft thick in the yard and is just now starting to melt vvveeeerrryyy slowly. All the usual games and such we do arent just cutting it for them... and they are sooo bored the days we cant get out and do anything.

Can anyone suggest some good toys that will keep them entertained? Ive got simple balls you stick treats in that they roll around.. but even those have lost their charm.

The fuzzbutts thank you in advance!

Sometimes just an empty 2 liter pop bottle works,something that makes alot of crunchy noise seems to keep them entertained the most.

Forgot to mention - for those that dont know/remember - they are both Miniature Schnauzers.

Oh,lol,maybe a 12 oz.bottle then.

Something that will keep them and YOU amused for quite awhile is to give each of them a big spoonful of peanut butter on a cracker.

And pics are a MUST.

Maybe like an interactive feeding toy? I feed my GSP in a "tug-a-jug" and he loves that stupid thing. He will pick at his food if it is in a bowl but gets all excited when he eats out of the tug-a-jug. Here is a link for it.