I'm currently working on cramming as many useful/interesting mods into minecraft to put on my laptop for if/when i need to be entertained on the go and am without interwebs.
So far, I've successfully installed the following mods (in this order) and with comments on conflicts for those that want to do the same. those with *** next to them needed their properties file changing to settle item ID conflicts:
Modloader (required for most of these mods!)
Bettergrass 2.6 standalone (not done with the hi rez pack as it breaks stuff)
Bettergrass 2.6 Modloader compatibility patch
BeeKeeping
Optifog (i wont use this on my laptop, but on my PC i get a "Very Far" setting and it's amped up my fps from 50's to 70's!!!
Expanded Farming 1.5 ***
Vertical Redstone
Pistons
FancyPack 3.5 (Furniture)***
ClayDeposits 1.1
Clay Sieve 1.1
Kaevator Super Slopes v2
ModloaderMP 1.5 v1 (required for planes)
Turbomodelthingy v2.2.1 (required for planes)
Audio Mod (required for Planes)
Planes v12
Vehicles v1.1
Property Reader 1.5 *** (required for Finite Liquid)
FiniteLiquid v2
I also stuck in a transparent cloud texture to remove them from the game.
If anyone has any suggestions to add more fun things to play with or content that is just outright missing let me know
[EDIT] oh, just thought i'd mention, here's a list of plugins that break the current selection and i've no idea why or how to fix it:
MrMMods
Optimine (although that's understandable given what Optifog does!)
Too Many Items