It's not a perfect solution, but what I have done is set each included product as its own radio button that is required and seected by default, then use some CSS at the end of the product description to hide elements you don't want to show up. For example, one product where I use this technique is showing the thumbnails and names of the included products but gives no form elements, etc. This is not with the default theme, so class names might not be standard. Your theme may be different, and you'll need to specify different .classes depending on what you want to show and hide anyway.
<style>
.product-options dd .qty-holder { display: none; }
.change-container-classname { display: none; }
.price-notice { display: none; }
.required { display: none; }
ul.options-list input.radio { display: none; }
</style>It's not a perfect solution, but it is effective - especially if the product is configured so that nothing can be changed anyway if a user bypasses the CSS to access the form elements.
