I need a small knife I can fit on a keychain for opening boxes and the like. But something that also could be used for other stuff, reliably, something that can take some heavy use.
If there is nothing like that, just recommend me the best possible pocket knife in your opinion.
What you seem to be looking for is a small fixed blade, cause keychain folders can be flimsy as hell.
Are you okay with neck knives? Cause the ESEE Izula or the CRKT Folts Minimalist are pretty solid choices.
Any folder would do then. It's better to go to your local sporting goods store/knife store and get a feel of the knives, and select from there.
If there are any Spydercos, those are good choices for the budget.
Here you go anon, thank me later.
No arguments here. Best knife ever. The scissor's spring did break once because I was a dumbfuck but wow 3$ replacement.
If you don't have this knife you are not living life.
If you actually plan to cut ropes then get a partially serrated edge. Otherwise a non-serrated edge is far easier to sharpen and gives more useful surface for cutting.
You might consider a small fixed blade as well. A lot of benefits over folders, and if small enough they're very easily EDC'd.