All kinds of things! You can put various implements on the front, but I have personal experience only with the bucket and pallet fork attachments, which in themselves are very usefull. A New Holland LS-180 is what I have used. 

 With the bucket as shown on the Bobcat  you can load, dump, dig, grade, carry, etc. It makes for an excellent oversized wheelbarrow, particularly when there is are one or more extra persons to load the bucket. 

 With the pallet forks, you have an all terrain forklift, but they are good for so much more than just pallets! The forks are positionable from between six inches apart, to the full width of the attachment.  

 Pushed close together they can break up dirt when digging holes in hard ground making the task much faster than with hand tools alone (strictly speaking this is what a small excavator attachment is for, but you work with what you have.) 
 Great for starting small holes in hard ground when planting trees. 
 Just the other day I used the forks in this configuration to quickly and easily remove some medium shrubs that we wanted to transplant.  

 With the forks spaced wider you can even do demoliton! Then spread the forks, or put on the bucket to haul the debris. 
 Then you can use one of these attachments to compress the contents of the disposal dumpster in order to fit as much as possible into it.