Using homeowners is the way to go. I have a rider with Liberty Mutual. $50 deductible for full replacement on iPhone, iPad or up to $5k worth of computer equipment for damger, theft, loss etc. Costs me about $20 a year 
USAA only wanted $45/year for an endorsement on my home insurance that covers $3K worth of electronics in the house against damage from accidents - NO DEDUCTIBLE. I've already used it on an iPhone with coffee damage - had the full retail price (not the 2yr contract price) direct deposited into my checking account within 2 days. Excellent service, excellent price!