A baby who is toilet training may have a difficult time remembering to wakeup before going to the bathroom so a waterproof mattress pad may be a good idea to make clean up easier.
Consider putting a vinyl cover on the mattress and/or an additional "leak pad" under the baby on top of the bedding.
Yes using a waterproof is ideal until a certain age,especially for babies
Non-organic and waterproof mattress pads may give off chemical fumes. For mattress pads that won't give off fumes, it is a good idea to check websites that cater to people with allergies, such as allergybuyersclub.com.
The best one is the “Quiet Comfort Waterproof Mattress pad.” It is both soft and quiet so you don’t even really need to tell the person using it that it is waterproof. This could be good for sparing hurt or embarrassed feelings. You can get this mattress pad at your local Walmart, K-mart or Target stores.
Is she ok medically? Is her mattress comfortable? Try to change her baby pillow and see. May be it is hurting her. Also get her a good quality mattress that is soft yet firm.
The computer wouldn't work if you puked on it unless it's waterproof but if it was waterproof it would need a very good scrub.
The best mattress protector is the Luna Premium Hypoallergenic Waterproof Mattress Protector. The queen size is being sold at around $40. This product is so good, it comes with a 10 year warranty.
It's not waterproof
There are a lot of great waterproof digital cameras available. A great mid range priced model would be the Nikon Coolpix Waterproof.
XCM a good waterproof case makes the Seawalker waterproof bag for PSP. anonymous@oola.com
Here is a good article that doesn't try to sell you a particular mattress. It explains the different materials used and what to look for when purchasing an organic mattress. http://www.yourcribmattressguide.com/why-choose-an-organic-baby-crib-mattress/
The telephone number for America's #1 mattress retailer, Mattress Firm is 877.384.2903. A good mattress is very important for good sleep and for a good back.