There are not enough outlets to charge your mobile devices on the power strip? Check out Aluartek Mini Surge Dual USB charging station, maybe it can help you.
This is a portable, multi functional universal adapter, which features small size, and comes with 3 outlets and 2 USB charging ports in order that you can connect more devices or charge two USB-powered mobile devices at the same time such as iPhone, iPad, BlackBerry, MP3 player, and more, while the built-in fireproof circuit protection with power surge LED can effectively protect your charging devices. Apart from that, the foldable plug design allows you to take the universal adapter to anywhere.
Aluartek mini surge dual USB charging station is priced at $19,99 USD. If you’re interested, jump to Aluartek official site for more details.
Additionally, if you need more options, you might like to check IDAPT universal charger and the universal adapter.