Plaid Mod Podge the number one, all-in-one glue, sealer and finish product that's water-based for easy clean up and totally non-toxic.
 
The dishwasher safe version still gives a gloss finish if used as a top coat, BUT has the extra benefit of being top rack dishwaher safe once allowed to fully cure (usually 24 hours). This also means if it used as an adhesive, whatever you have stuck with it should not come off in the wash. It is very popular for adding glitter to glasses, etc.
 
Tub contains 236 ml (8 fl oz)