The list is endless!
A couple of things to consider when choosing your base to mosaic onto, is it a clean flat rigid surface? and what will be the purpose of it eg Interior/Exterior.
This will help to determine what glue you will need.
Ideas of some things to mosaic onto:
Glass wine bottles
Strangely enough Hubcaps
Ceramic or stone statues
We have an extensive range of MDF bases which we consider to be great, however these need to be sealed before and after mosaic has been applied and really for interior or because we have our bases laser cut it does provide a little protection on the edges so we do have our ones on the porch but under cover no exposure to rain.
Once you choose your base you can see what glue is best in our Glues section.