Updatophobia (97090315) or CONK (61974257) by SirHadoken are neat- probably his two best levels.

MOTHMELONS (79428382) by Valentine is also really good. If you want something that's more thematic, I would also suggest cool bug facts (80970419). Heatwave (89751830) is also diabolically good.

I'll second tspkl by durianhead, although I think smochs (52448794) is also really cool and worthy of checking out.

wildpride (120648194) by SGameT is heat. Usual SGameT greatness.

Pretty sure that Caught in the Rain (106380424) is from a BridgetTheCroco alt... probably my fav of hers if you're willing to check that out. There's also another level that was an easy demon on her old account but I forgot the level's name.

kowareta (46763581) is a club classic, being spearheaded by Gablor (although I forgot who did the decoration for it).

paint planet (92388466) and girlypop (119734067) by 1212DENIS are also really good- paint planet especially with its story.

several good heatherhayes levels: shoebill (74850471), free level (63500550), cement (62413095), imatation game (102562296)- literally just pick your poison.

Pink Nightmares (51939013) or Farthest Outpost (95138230) by Jghost are also really good

I'll also be a bit shameless and throw out my own level Anoxia (120495263) LOL