Necessary first print items?

I just powered on my Robo R1 and I am curious what the items I should start printing are.
I did a cube and I'm looking into doing the boat but unsure if there are items needed for the printer or to have on hand if something breaks.

Thank you.

 

@WheresWaldo thats not helpful at all. Please refrain from suggesting to people they search for things without providing useful information.

For replacement pArts I suggest at the very least the y axis belt tensioner. http://www.thingiverse.com/thing:681894

Robo3d also has all their part files on their thingiverse if you'd like to print other copies. It's not really necessary as most of the other parts aren't prone to failure.

Some good mods are lifter feet and dual parts fan holders.

 

I've printed a filament holder for the top that feed the filament a lot better than the stock location(s) and I also printed an oiler. I really just went to Thingiverse and searched for Robo3d and looked at the great work the community has done with tweaks not included on the printer. The feet that Mike designed are great and I also have the dual fan adapter he designed in the queue to print. That really should be higher on my list since I often have issues with cooling on the backside printing. Too many neat gadgets to print. I have just been burning through the stock blue. Have fun with it and try things that need support or play with different settings to see how that changes your prints. Lots to learn and I have only scratched the surface.

Spool Holder
http://www.thingiverse.com/thing:267039

Oiler
http://www.thingiverse.com/thing:724219

Dual Fan
http://www.thingiverse.com/thing:720018

Feet
http://www.thingiverse.com/thing:681876

Print Your Printer
http://www.thingiverse.com/thing:69794

Bottle Opener - Seriously - nothing like having this on your keychain to start a conversation and also handy when you are stuck on a printer problem to pop open a cold refreshment
http://www.thingiverse.com/thing:139461