There is a newish product called Ice resin that is an easier to use version of cold resin. it is not readily available here yet but some shops are now selling it. The company has a lot of products, blanks and things ot use with it. They could be the company working with spellbinders now I come to think of it. (or they work with vintaj who work with spellbinders. too late at night, sorry)

There are videos on how to embed something in the resin.

I am dying to have a go but haven't bought any yet:)

Alison