This topic is similar to what you need, but the images aren’t showing up. They want the items to take up the full height of the screen:
Here is the codepen from that example: http://codepen.io/anon/pen/KwppNq
If you just want boxes side by side the markup mentioned by bengtler will work:
<ion-item ng-repeat="item in [1,2,3,4,5,6,7,8,9]" class="custom-item">
Item {{item}}
</ion-item>
and css:
.custom-item {
width: 50%;
float: left;
height: 300px;
}
Here is a codepen example: http://codepen.io/brandyshea/pen/pjgKpM