Some models provide storage for toys and other baby items in zippered side pockets, fabric shelves, hook-on fabric storage pouches, and small clip-on parent-organizer bags. Of course those features aren't necessary, but if you want to use them, look for storage that is big enough to actually hold something. Storage compartments should attach, or be built into the outside of the play yard, so they're out of your baby's reach. One deluxe example is the S1 by Safety 1st Satellite Premier Playard - Pegasus (about $128), which comes with attached shelves and a small laundry hamper.
Do not use the play yard once your baby has outgrown it: Stop using the play yard right from the day your baby outgrows the recommended age. You may be tempted to use it for some more days or weeks but this can be very dangerous since play yards are designed to meet the specific height and weight requirements of babies of certain age. The build materials may not be able to sustain the increased weight of a baby who has outgrown the recommended age of the playard thus posing a risk of injury.
This thing is great. I have it set up as a wall spliting my living room in half basically. The panels are sturdy so hold up great when my daughter pulls herself up standing against them. As i have it set up as a wall i did anchor it to the room walls byattaching some Velcro to the room wall with a screw at either end then wrapping the Velcro around a piece of each end section. This has allowed me to create a baby safe area with all her toys and then an adult safe area with no toys to trip over, and itlet meget away with not baby proofing the entertainment center.