With all the smart phones, tablet and laptops being bluetooth enabled we really don't need much in terms of audio equipment in our home. We just switched to using the 16W Supertooth which has a built in battery, amp and speaker. All of our technology talks to it so we can use play all of our audio from any device in the house. If we need to go on the road just grab the Supertooth and it can work in the vehicles and hotel rooms. The built-in lithium battery lasts about 10 hours.
In trying to stick to a model of get rid of something for every thing you acquire, we're hoping to pass on our existing speakers, a nice set of JBLs acquired at a garage sale but less portable and flexible than the SuperTooth.