Well, I started moving into a new place a few weeks ago, and am finally now getting settled more. Previously I've been parking my bike in the garage and plugging it into the same outlet that the garage door is plugged into. The wiring was a bit hazy, so I was definitely in the market for something custom (and cheap!).
The previous owner had installed a 240V dryer outlet outside, where he apparently had a washer and dryer for the upstairs suite. Since he'd taken the appliances, we had a spare 30A 240V outlet, with wiring that ran past the garage and onto the patio.
I spent a bit of time with my brother figuring things out (he did a lot of the work, thankfully, though he definitely has more experience than myself!), then headed to Home Depot today to get a few parts.
We started out by flipping the breaker, just to prevent any potential mishaps. Next, we disconnected the wire from the dryer receptacle on the patio and ran the wire straight into the garage. From there, we installed a new electrical box and connected the wire to the receptacles. The wire running to the dryer receptacle was 10/4, and while that's really thick and caused some frustration in installation, we decided against replacing the wire - too much trouble and too much money for little benefit.
From there, we connected ground to both, daisy-chained the neutral and connected a hot wire to each one. Then we finished off with a nice $1.37 faceplate to make it look pretty.
All in all the cost to do this was just under $15, and now we've got side-by-side receptacles each on their own 15A circuit, which means my bike can have it's own receptacle for charging, I can get a quick charger and plug it in right beside the regular charger, and we've got plenty of power in the garage should we need to use the pressure washer, air compressor, etc. without worrying about tripping the breaker.
It's not the prettiest setup, that much I will admit, but it's definitely practical!