Best Nesting Material?

[KSBNewb]

I have a 1.1 pair of breeding mice on Aspen shavings in a 10gal tank. Fairly simple setup, but it's my first shot at home-made snake food :-)
I got tired of the local shops not carrying the "in-between" sizes that my KSB needs...
So my question is...what is the best kind of nesting material?
I know they sell nesting material for mice at petshops, but is there anything cheaper...like say cotton balls....that I could use?
Just wondering...let me know asap please

Oh ya, the males and females were housed apart at Petco...they have been together now for a few hours and the Male seems to come up from behind and nip on the Female...don't think it's hurting her, but she runs from him...
Is this his way of saying "Let's get it on.." (yes, singing Marvin Gaye in my head) .... ????
Thanks!
Here is a pic!

[littleindiangirl]

Aspen is going to be good enough nesting material. No need to spend any more money than you need to.

[KSBNewb]

Aspen is going to be good enough nesting material. No need to spend any more money than you need to.

Thanks! I kinda figured that much...because they like to burrow in it, you'd think they would nest in it too...
Thanks again!

[Shadera]

You can give them a bit of paper towel to shred up. I've got a few girls who love to shred those.

[punyhuman07]

i use the paper towel cardboard tube that works great got a seprate bag in bathroom to collecting them

[Clyde Frog]

I provide mine with a little toilet paper roll or two and the Petco box they came in but I cut a little hole for them and cut off the top so it's like a little hide for them. Then, I stick in a few sheets of toilet paper so they can move it all around and nest in it however they like.

[nixer]

i dont give mine anything but pine bedding, food, and a water bottle

[Fearless]

i dont give mine anything but pine bedding, food, and a water bottle

Thats how I do it now too, but before that I would use 3 or four sheets of toilet paper for them to build a nest out of.

[kc261]

I don't think this qualifies as "best", but I give mine shredded newspaper for building nests. Most of the colonies seem to like it. A few end up burying it under the equine fresh pellets.