In terms of stability, I've found that incorporating weighted bases or low centers of gravity into the couch design can really help to prevent tipping over. It's not uncommon for toddlers to enthusiastically climb onto or jump off furniture, so having a sturdy foundation is crucial.
Some designers also recommend using soft, foam-filled corners or cushioned edges on the couch to make it more forgiving in case of accidental bumps or knocks. This can help mitigate any potential damage and reduce the risk of injury.
In addition, you might consider placing the couch on rubber feet or anti-tip devices that prevent it from sliding or toppling easily. These little extras can make a big difference in keeping kids safe while they're playing and exploring their toddler-friendly play area.
If stability still remains a concern, you could also consider using alternative seating options that are specifically designed for toddlers. For example, there are many great playmat or playgym options available that come with sturdy bases and built-in support structures to prevent tipping.
It ultimately depends on your specific design goals and needs, but hopefully some of these suggestions will be helpful in making the couch a safe and enjoyable part of your toddler's imaginative space!