Prepare the Jell-o as normal per package instructions then set aside to let cool. Make sure it has cooled fully so you don't melt your plastic cups!
Strain your canned lychee (save the syrup if you'd like to make drinks or use for other desserts) and gently pat them dry.
Add one blueberry to each lychee ball opening with the blueberry facing up.
Once fully cooled, add your Jell-O mixture to each little dessert cup about 3/4 of the way full.
Next, you can either add your lychee/blueberry balls in immediately (they may turn over or not sit right at the top so you may need to adjust them a little bit or fix them when the jello sets more) or you can wait an hour or two until the jello has set a little bit and stick the lychee/blueberry balls in.
Let set in the fridge for minimally 4 hours then serve and enjoy!