I try to keep all of my toys from touching each other, both to prevent any sort of color/material bleeding at all...and also to prevent any chipping that might happen if glass/metal toys tapped against each other (not paranoid about this, but might as well avoid it). less

Here's the breakdown:

1) Pure silicone can be safely stored with pure silicone, but not silicone compounds (so be careful not to let TPR silicone get in there by accident). I keep most of my silicone dildos together in a makeup bag, and they're perfectly fine.

2) Hard plastic, glass, and metal are inert and thus safe to put with anything.

3) Toys of other materials (jelly, TPR, TPR silicone, cyberskin, etc.) should each be stored individually.

The only materials I'm not certain about are ceramic and wood. I can't think of any reason why these two would cause reactions, but since I'm not sure I won't make any solid statements on the topic.

Plastic baggies are usually fine for keeping toys separated, though I have heard of jelly having a reaction to them. less