(Osram: US and EU. Nortek: US only.) Two new battery operated Devices with a very similar form factor now have community created device handlers. They can be used as either a wall switch or a tabletop remote.
This is a smart switch cover. It’s a battery-operated device, which means it will not act as a repeater. The idea is that it fits over the top of an existing switch. You leave the existing switch always powered on, so that there is power to the smart bulbs. But the cover has its own buttons that you can use to send a wireless signal either to the bulbs or in some cases to the hub to instruct the bulbs to turn on and off.
If the device allows you to send a signal to the hub, it may be possible to use it as what SmartThings calls a “button controller” like the Aeon minimote, which would mean you could then use the buttons to control devices of a different protocol then the switch cover itself, or maybe two arm/disarm smart home monitor, etc.
And again because these devices are battery operated, They can also be used on the nightstand or to create a virtual three-way or again to arm/disarm smart home monitor without having to cover an existing switch.
Two of these have recently come on the market.
The first is the Osram/Sylvania Lightify smart switch. This is a zigbee device. A new community-created device handler has just been released for it (March 2016). (Updated to note that as of May 2017 there is now an official device handler for this device, and it will work straight out of the box with SmartThings. 
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The second is the Nortek Z wave smart switch cover which is being sold under several brand names, including domitech and go control. It is brand-new, but a community member already has a button controller device handler for it which is reportedly working well. 
These both solve the problem of household members turning off smart bulbs at the switch.
The Osram should be available in both the US and EU. The Nortek is only available in the US.