Barbara, I would use a mattock on ground that is too hard to dig into with a shovel. I have it for metal detecting. It can also cut roots if necessary.
Another tool for moving stuff around on the surface is the garden Hoe.
Regarding a
Nibbler, they cut very slowly but leave a much nicer edge than the snips.
Nibbler attachments for drills are also available but I think its easier to control hand tools.
If for example your making a camping stove from a tin can, you drill a hole first (12mm - 0.5in) then get the nibbler in and start cutting.
You can cut in curves if you want, you'll see how much you can turn it without crunching up the edges.
You also get a nice 2mm curl of metal when your done.
If I remember right, they will cut soft metal like Aluminium to a thickness of around 2mm, and hard metal like steel much thinner, like 1mm at the most, but check with the tool shop first.
Regarding a Gourd, my thoughts are that its such an awkward shape and slippery surface that you'd either use rubber bicycle tube or cloth to wrap tightly around it, so you can hold it steadier on your knee, get it in a headlock, or have an assistant help.
You might try using a
jigsaw to make the bird hole, but they can be very dangerous on full power. I'd recommend get one with a variable speed, just like a drill.
Also you can get smaller ones for crafts, like this Proxxon. Very informative video here...
Regarding a drill press and other bench tools, get the owner to show you how to use it. Its the best way because you get the
safety lecture, and you find out what to do and what
not to do.
That goes for the lathe, welder, bench grinder, chop-saw and basically anything that can take your arm off. No tool is intuitive and its not worth getting hurt so take the lessons first.
It also removes the mystery to get advice and get your hands on and learn that way. Take your time.
If you don't mind a bit of bad language, check out engineer AvE. In this video he shows a tip for using a holesaw with a makeshift apparatus for applying
pressure to cut steel tube. (notice the drill speed is slow)
So since we're into
metal work now, its suitable to tell you of the most useful tool in the shop, an
angle grinder.
Dangerous bit of equipment, keep it away from the kids and the incompetent neighbour, and like those other things, get safety lessons first.
Also you need to know about
Brazing. Its like welding without the heavy equipment, just need a blowtorch, brazing rods, safety gear and some practice. Brazing temperature is a little over twice that of soldering.
Don't be intimidated by heavy tools, the more experience you get with them the better you become, but you always need to respect their power!