Build a waterproof and dust resistant case for your Digital Camera - picture says it all.
To protect your digital camera from water, humidity and dust - add a roll of cardboard around the lens, then slide the camera body inside a condom (non-lubricated), also slip a packet of silica-gel to absorb moisture and tie the knot.
Best of all, you can still shoot pictures or video while it's inside the pouch though the quality may not be perfect. Underwater photography anyone ? More details at Instructables.
A similar method can be used to protect mobile phones while you're inside the swimming pool.