Some stuff I've been working on between working on changes to my own game.
Townlet(v2) Action - Reaction, $4
+1 Card
+2 Actions
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When you get +Cards and/or +Actions, you may reveal this from your hand to switch them for this turn instead.
Campus(v3) Action - Reaction $5
Discard a card. Draw until you have 7 cards in hand.
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When you discard a card, other than in Clean-up, you may reveal this from your hand to trash it.
Polis(v1) Action - Duration - $5
The next time you play a Polis: +2 Cards, +2 Actions, and +1 Buy.
The last one is nerfed by virtually having one fewer in your deck. For example, if you had four of these, you would only be playing three of them because they don't activate until you play the next one. One is always in play doing nothing. You have to buy at least two of these to do anything with them.
Edit: Bonus image incoming.
Forest(v1) Victory - $6
Worth 5 VP, but you don't count your first Forest.
Another Edit: Fixed Campus. Thanks, segura!