to think of; to come up with
妙案をひとりで考え付いた。
I came up with a clever idea on my own.
解決策を一人で考え付いているのなら大したものだ。
If you are thinking up a solution on your own, that is impressive.
誰もが考え付くような単純な問題だ。
It is a simple problem that anyone would think of.