JiffyPopTart
Bree-Yark
Just remember that if you allow multiple devices to explode in your campaign you have just allowed a portable nuclear device for the low cost of 4000gp (two halversacks).
Step 1: Party of low level adventurers scrimp and save and buy two halversacks (Or make 2 for just 2000gp if the wizard is up to snuff).
Step 2: Party heads to lair of nasty beast.
Step 3: Party sends ignorant lackey/summoned monster into beast lair with instructions to stick sack 1 into sack 2.
Step 4: Party goes in and collects the treasure.
Step 5: Goto step 1
DS
Step 1: Party of low level adventurers scrimp and save and buy two halversacks (Or make 2 for just 2000gp if the wizard is up to snuff).
Step 2: Party heads to lair of nasty beast.
Step 3: Party sends ignorant lackey/summoned monster into beast lair with instructions to stick sack 1 into sack 2.
Step 4: Party goes in and collects the treasure.
Step 5: Goto step 1
DS