Depends on the size of touchscreen you want - there are a bunch if items you can get started on right away
1) Much cheaper to get started than a full touch screen as well. n770 or n800 can be picked up cheap.
Note they don't use a full implementation of X and they use maemo widget sets.
The advantage of the nokia is that they have enough storage and memory.
2) Another alternative is to find a small touchscreen photo
display.
3) iRiver PMP-120 or other media playing device with a touch screen.
4) If you are willing want a more customizable platform I would go with an Intel atom based chip laptop with a touch screen.
1) Much cheaper to get started than a full touch screen as well. n770 or n800 can be picked up cheap. Note they don't use a full implementation of X and they use maemo widget sets. The advantage of the nokia is that they have enough storage and memory.
2) Another alternative is to find a small touchscreen photo display.
3) iRiver PMP-120 or other media playing device with a touch screen.
4) If you are willing want a more customizable platform I would go with an Intel atom based chip laptop with a touch screen.