DIY Jello Easter Eggs [Recipe & Tutorial] : made using plastic Easter eggs sprayed with cooking spray. what a fun idea for Easter dinner! Best jello egg idea ever! You can also use this idea for dinosaur eggs
End-Of-The-Rainbow Cookie Parfaits ~ Says: Kids and adults will flip for these easy rainbow parfaits that are easy to make and over-the-top delicious. Patrick's Day or a Rainbow Themed Party (birthday cake cookies delicious food)
Possibly a good idea, but would only look good indoors or outside after dark. Also, would need to give lavalamps away at end of party, because I sure as hell don't want a dozen just floating around afterward.