Django's admin allows you to dynamically add and remove formset forms. This jQuery plugin does the same for the front end.

Markup

Each form is rendered using django-uni-form. I've wrapped each form in an additional div.form. This makes it a lot easier to target each entire form.

<div class="formset-group" id="phone_formset">
    <h2>Phones</h2>
    {% for phone_form in phone_formset.forms %}
        <div class="form">
            {{ phone_form|as_uni_form }}
        </div>
    {% endfor %}
</div>

Initialisation

Simply copy the plugin to your scripts directory and link it up into your page. Then initialise the plugin as detailed below. All parameters are required at the moment.

<script type="text/javascript" charset="utf-8" src="{{ MEDIA_URL }}scripts/formsets.jquery.js"></script>
<script type="text/javascript" charset="utf-8">
    $(document).ready(function(){
        $('#phone_formset').formset({
            'prefix': 'phone_set',
            'addCssClass': 'add-link',
            'addText': 'Add',
            'removeCssClass': 'remove-link',
            'removeText': 'Remove'
        });
    });
</script>

Status

I've not used this in production yet but it seems fairly robust in my testing. Please log bugs/enhancements as you find them.