Do you know the moments, when the DM gets a literary moment and starts to describe some environment in a dungeon that causes you to think "that would bring some gold" but it's not handy enough to get it away? A good-looking statue, an ornated chest with expensive parts (golden look, adamantium shell), a door of adamantium or something similar?
There are some ways to get it out of the dungeon, but what are the simplest ways if you don't have a huge-sized troll with strength over 30 in your party?
I think of some spells, but I'm sure there's much more that every random party got. Especially useful is of course things that are cheap to get (like low-level spells or cheap magic items).
Get the item more easy to transport:
• Shrink item (1/4000 volume)
• Fabricate (get the item into a better shape)
• Polymorph any object (morph it into a pebble and dispel later)
(1/10 weigth for 1min/lvl)
Increasing the ability to carry:
• Enlarge Person
• Bull's Strength
• Bite of ... (from spell compendium)
, Baleful Polymorph, Shapechange...
• Draconic Polymorph (Draconomicon)
• Druidic Wildshape
Let spells/items carry your loot:
• Tenser's Floating Disk
• Leomund's Secret Chest
• Bag of Holding (decrease the weight by huge amount)
• Enveloping Pit (huge portable hole from MIC)
• any spell to animate the corpses (they "carry" themselves + some part of your loot)
• Artificer's ability to get craft points out of items (Magic items ONLY)
• Ancestral Relic (feat from BoED) with portable altar
• Greater Tenser's Floating Disc (Spell Compendium)